spanner

package
v0.0.0-...-6edceaf Latest Latest
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 Go to latest Published: Jan 14, 2021 License: Apache-2.0 Imports: 15 Imported by: 102

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	PlanNode_Kind_name = map[int32]string{
		0: "KIND_UNSPECIFIED",
		1: "RELATIONAL",
		2: "SCALAR",
	}
	PlanNode_Kind_value = map[string]int32{
		"KIND_UNSPECIFIED": 0,
		"RELATIONAL":       1,
		"SCALAR":           2,
	}
)

Enum value maps for PlanNode_Kind.

View Source 
var (
	ExecuteSqlRequest_QueryMode_name = map[int32]string{
		0: "NORMAL",
		1: "PLAN",
		2: "PROFILE",
	}
	ExecuteSqlRequest_QueryMode_value = map[string]int32{
		"NORMAL":  0,
		"PLAN":    1,
		"PROFILE": 2,
	}
)

Enum value maps for ExecuteSqlRequest_QueryMode.

View Source 
var (
	TypeCode_name = map[int32]string{
		0:  "TYPE_CODE_UNSPECIFIED",
		1:  "BOOL",
		2:  "INT64",
		3:  "FLOAT64",
		4:  "TIMESTAMP",
		5:  "DATE",
		6:  "STRING",
		7:  "BYTES",
		8:  "ARRAY",
		9:  "STRUCT",
		10: "NUMERIC",
	}
	TypeCode_value = map[string]int32{
		"TYPE_CODE_UNSPECIFIED": 0,
		"BOOL":                  1,
		"INT64":                 2,
		"FLOAT64":               3,
		"TIMESTAMP":             4,
		"DATE":                  5,
		"STRING":                6,
		"BYTES":                 7,
		"ARRAY":                 8,
		"STRUCT":                9,
		"NUMERIC":               10,
	}
)

Enum value maps for TypeCode.

View Source 
var File_google_spanner_v1_keys_proto protoreflect.FileDescriptor
View Source 
var File_google_spanner_v1_mutation_proto protoreflect.FileDescriptor
View Source 
var File_google_spanner_v1_query_plan_proto protoreflect.FileDescriptor
View Source 
var File_google_spanner_v1_result_set_proto protoreflect.FileDescriptor
View Source 
var File_google_spanner_v1_spanner_proto protoreflect.FileDescriptor
View Source 
var File_google_spanner_v1_transaction_proto protoreflect.FileDescriptor
View Source 
var File_google_spanner_v1_type_proto protoreflect.FileDescriptor

Functions

func RegisterSpannerServer 

func RegisterSpannerServer(s *grpc.Server, srv SpannerServer)

Types

type BatchCreateSessionsRequest 

type BatchCreateSessionsRequest struct {

	// Required. The database in which the new sessions are created.
	Database string `protobuf:"bytes,1,opt,name=database,proto3" json:"database,omitempty"`
	// Parameters to be applied to each created session.
	SessionTemplate *Session `protobuf:"bytes,2,opt,name=session_template,json=sessionTemplate,proto3" json:"session_template,omitempty"`
	// Required. The number of sessions to be created in this batch call.
	// The API may return fewer than the requested number of sessions. If a
	// specific number of sessions are desired, the client can make additional
	// calls to BatchCreateSessions (adjusting
	// [session_count][google.spanner.v1.BatchCreateSessionsRequest.session_count] as necessary).
	SessionCount int32 `protobuf:"varint,3,opt,name=session_count,json=sessionCount,proto3" json:"session_count,omitempty"`
	// contains filtered or unexported fields
}

The request for [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].

func (*BatchCreateSessionsRequest) Descriptor deprecated 

func (*BatchCreateSessionsRequest) Descriptor() ([]byte, []int)

Deprecated: Use BatchCreateSessionsRequest.ProtoReflect.Descriptor instead.

func (*BatchCreateSessionsRequest) GetDatabase 

func (x *BatchCreateSessionsRequest) GetDatabase() string

func (*BatchCreateSessionsRequest) GetSessionCount 

func (x *BatchCreateSessionsRequest) GetSessionCount() int32

func (*BatchCreateSessionsRequest) GetSessionTemplate 

func (x *BatchCreateSessionsRequest) GetSessionTemplate() *Session

func (*BatchCreateSessionsRequest) ProtoMessage 

func (*BatchCreateSessionsRequest) ProtoMessage()

func (*BatchCreateSessionsRequest) ProtoReflect 

func (x *BatchCreateSessionsRequest) ProtoReflect() protoreflect.Message

func (*BatchCreateSessionsRequest) Reset 

func (x *BatchCreateSessionsRequest) Reset()

func (*BatchCreateSessionsRequest) String 

func (x *BatchCreateSessionsRequest) String() string

type BatchCreateSessionsResponse 

type BatchCreateSessionsResponse struct {

	// The freshly created sessions.
	Session []*Session `protobuf:"bytes,1,rep,name=session,proto3" json:"session,omitempty"`
	// contains filtered or unexported fields
}

The response for [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].

func (*BatchCreateSessionsResponse) Descriptor deprecated 

func (*BatchCreateSessionsResponse) Descriptor() ([]byte, []int)

Deprecated: Use BatchCreateSessionsResponse.ProtoReflect.Descriptor instead.

func (*BatchCreateSessionsResponse) GetSession 

func (x *BatchCreateSessionsResponse) GetSession() []*Session

func (*BatchCreateSessionsResponse) ProtoMessage 

func (*BatchCreateSessionsResponse) ProtoMessage()

func (*BatchCreateSessionsResponse) ProtoReflect 

func (x *BatchCreateSessionsResponse) ProtoReflect() protoreflect.Message

func (*BatchCreateSessionsResponse) Reset 

func (x *BatchCreateSessionsResponse) Reset()

func (*BatchCreateSessionsResponse) String 

func (x *BatchCreateSessionsResponse) String() string

type BeginTransactionRequest 

type BeginTransactionRequest struct {

	// Required. The session in which the transaction runs.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// Required. Options for the new transaction.
	Options *TransactionOptions `protobuf:"bytes,2,opt,name=options,proto3" json:"options,omitempty"`
	// contains filtered or unexported fields
}

The request for [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].

func (*BeginTransactionRequest) Descriptor deprecated 

func (*BeginTransactionRequest) Descriptor() ([]byte, []int)

Deprecated: Use BeginTransactionRequest.ProtoReflect.Descriptor instead.

func (*BeginTransactionRequest) GetOptions 

func (x *BeginTransactionRequest) GetOptions() *TransactionOptions

func (*BeginTransactionRequest) GetSession 

func (x *BeginTransactionRequest) GetSession() string

func (*BeginTransactionRequest) ProtoMessage 

func (*BeginTransactionRequest) ProtoMessage()

func (*BeginTransactionRequest) ProtoReflect 

func (x *BeginTransactionRequest) ProtoReflect() protoreflect.Message

func (*BeginTransactionRequest) Reset 

func (x *BeginTransactionRequest) Reset()

func (*BeginTransactionRequest) String 

func (x *BeginTransactionRequest) String() string

type CommitRequest 

type CommitRequest struct {

	// Required. The session in which the transaction to be committed is running.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// Required. The transaction in which to commit.
	//
	// Types that are assignable to Transaction:
	//	*CommitRequest_TransactionId
	//	*CommitRequest_SingleUseTransaction
	Transaction isCommitRequest_Transaction `protobuf_oneof:"transaction"`
	// The mutations to be executed when this transaction commits. All
	// mutations are applied atomically, in the order they appear in
	// this list.
	Mutations []*Mutation `protobuf:"bytes,4,rep,name=mutations,proto3" json:"mutations,omitempty"`
	// contains filtered or unexported fields
}

The request for [Commit][google.spanner.v1.Spanner.Commit].

func (*CommitRequest) Descriptor deprecated 

func (*CommitRequest) Descriptor() ([]byte, []int)

Deprecated: Use CommitRequest.ProtoReflect.Descriptor instead.

func (*CommitRequest) GetMutations 

func (x *CommitRequest) GetMutations() []*Mutation

func (*CommitRequest) GetSession 

func (x *CommitRequest) GetSession() string

func (*CommitRequest) GetSingleUseTransaction 

func (x *CommitRequest) GetSingleUseTransaction() *TransactionOptions

func (*CommitRequest) GetTransaction 

func (m *CommitRequest) GetTransaction() isCommitRequest_Transaction

func (*CommitRequest) GetTransactionId 

func (x *CommitRequest) GetTransactionId() []byte

func (*CommitRequest) ProtoMessage 

func (*CommitRequest) ProtoMessage()

func (*CommitRequest) ProtoReflect 

func (x *CommitRequest) ProtoReflect() protoreflect.Message

func (*CommitRequest) Reset 

func (x *CommitRequest) Reset()

func (*CommitRequest) String 

func (x *CommitRequest) String() string

type CommitRequest_SingleUseTransaction 

type CommitRequest_SingleUseTransaction struct {
	// Execute mutations in a temporary transaction. Note that unlike
	// commit of a previously-started transaction, commit with a
	// temporary transaction is non-idempotent. That is, if the
	// `CommitRequest` is sent to Cloud Spanner more than once (for
	// instance, due to retries in the application, or in the
	// transport library), it is possible that the mutations are
	// executed more than once. If this is undesirable, use
	// [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction] and
	// [Commit][google.spanner.v1.Spanner.Commit] instead.
	SingleUseTransaction *TransactionOptions `protobuf:"bytes,3,opt,name=single_use_transaction,json=singleUseTransaction,proto3,oneof"`
}

type CommitRequest_TransactionId 

type CommitRequest_TransactionId struct {
	// Commit a previously-started transaction.
	TransactionId []byte `protobuf:"bytes,2,opt,name=transaction_id,json=transactionId,proto3,oneof"`
}

type CommitResponse 

type CommitResponse struct {

	// The Cloud Spanner timestamp at which the transaction committed.
	CommitTimestamp *timestamppb.Timestamp `protobuf:"bytes,1,opt,name=commit_timestamp,json=commitTimestamp,proto3" json:"commit_timestamp,omitempty"`
	// contains filtered or unexported fields
}

The response for [Commit][google.spanner.v1.Spanner.Commit].

func (*CommitResponse) Descriptor deprecated 

func (*CommitResponse) Descriptor() ([]byte, []int)

Deprecated: Use CommitResponse.ProtoReflect.Descriptor instead.

func (*CommitResponse) GetCommitTimestamp 

func (x *CommitResponse) GetCommitTimestamp() *timestamppb.Timestamp

func (*CommitResponse) ProtoMessage 

func (*CommitResponse) ProtoMessage()

func (*CommitResponse) ProtoReflect 

func (x *CommitResponse) ProtoReflect() protoreflect.Message

func (*CommitResponse) Reset 

func (x *CommitResponse) Reset()

func (*CommitResponse) String 

func (x *CommitResponse) String() string

type CreateSessionRequest 

type CreateSessionRequest struct {

	// Required. The database in which the new session is created.
	Database string `protobuf:"bytes,1,opt,name=database,proto3" json:"database,omitempty"`
	// The session to create.
	Session *Session `protobuf:"bytes,2,opt,name=session,proto3" json:"session,omitempty"`
	// contains filtered or unexported fields
}

The request for [CreateSession][google.spanner.v1.Spanner.CreateSession].

func (*CreateSessionRequest) Descriptor deprecated 

func (*CreateSessionRequest) Descriptor() ([]byte, []int)

Deprecated: Use CreateSessionRequest.ProtoReflect.Descriptor instead.

func (*CreateSessionRequest) GetDatabase 

func (x *CreateSessionRequest) GetDatabase() string

func (*CreateSessionRequest) GetSession 

func (x *CreateSessionRequest) GetSession() *Session

func (*CreateSessionRequest) ProtoMessage 

func (*CreateSessionRequest) ProtoMessage()

func (*CreateSessionRequest) ProtoReflect 

func (x *CreateSessionRequest) ProtoReflect() protoreflect.Message

func (*CreateSessionRequest) Reset 

func (x *CreateSessionRequest) Reset()

func (*CreateSessionRequest) String 

func (x *CreateSessionRequest) String() string

type DeleteSessionRequest 

type DeleteSessionRequest struct {

	// Required. The name of the session to delete.
	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	// contains filtered or unexported fields
}

The request for [DeleteSession][google.spanner.v1.Spanner.DeleteSession].

func (*DeleteSessionRequest) Descriptor deprecated 

func (*DeleteSessionRequest) Descriptor() ([]byte, []int)

Deprecated: Use DeleteSessionRequest.ProtoReflect.Descriptor instead.

func (*DeleteSessionRequest) GetName 

func (x *DeleteSessionRequest) GetName() string

func (*DeleteSessionRequest) ProtoMessage 

func (*DeleteSessionRequest) ProtoMessage()

func (*DeleteSessionRequest) ProtoReflect 

func (x *DeleteSessionRequest) ProtoReflect() protoreflect.Message

func (*DeleteSessionRequest) Reset 

func (x *DeleteSessionRequest) Reset()

func (*DeleteSessionRequest) String 

func (x *DeleteSessionRequest) String() string

type ExecuteBatchDmlRequest 

type ExecuteBatchDmlRequest struct {

	// Required. The session in which the DML statements should be performed.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// Required. The transaction to use. Must be a read-write transaction.
	//
	// To protect against replays, single-use transactions are not supported. The
	// caller must either supply an existing transaction ID or begin a new
	// transaction.
	Transaction *TransactionSelector `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// Required. The list of statements to execute in this batch. Statements are executed
	// serially, such that the effects of statement `i` are visible to statement
	// `i+1`. Each statement must be a DML statement. Execution stops at the
	// first failed statement; the remaining statements are not executed.
	//
	// Callers must provide at least one statement.
	Statements []*ExecuteBatchDmlRequest_Statement `protobuf:"bytes,3,rep,name=statements,proto3" json:"statements,omitempty"`
	// Required. A per-transaction sequence number used to identify this request. This field
	// makes each request idempotent such that if the request is received multiple
	// times, at most one will succeed.
	//
	// The sequence number must be monotonically increasing within the
	// transaction. If a request arrives for the first time with an out-of-order
	// sequence number, the transaction may be aborted. Replays of previously
	// handled requests will yield the same response as the first execution.
	Seqno int64 `protobuf:"varint,4,opt,name=seqno,proto3" json:"seqno,omitempty"`
	// contains filtered or unexported fields
}

The request for [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].

func (*ExecuteBatchDmlRequest) Descriptor deprecated 

func (*ExecuteBatchDmlRequest) Descriptor() ([]byte, []int)

Deprecated: Use ExecuteBatchDmlRequest.ProtoReflect.Descriptor instead.

func (*ExecuteBatchDmlRequest) GetSeqno 

func (x *ExecuteBatchDmlRequest) GetSeqno() int64

func (*ExecuteBatchDmlRequest) GetSession 

func (x *ExecuteBatchDmlRequest) GetSession() string

func (*ExecuteBatchDmlRequest) GetStatements 

func (x *ExecuteBatchDmlRequest) GetStatements() []*ExecuteBatchDmlRequest_Statement

func (*ExecuteBatchDmlRequest) GetTransaction 

func (x *ExecuteBatchDmlRequest) GetTransaction() *TransactionSelector

func (*ExecuteBatchDmlRequest) ProtoMessage 

func (*ExecuteBatchDmlRequest) ProtoMessage()

func (*ExecuteBatchDmlRequest) ProtoReflect 

func (x *ExecuteBatchDmlRequest) ProtoReflect() protoreflect.Message

func (*ExecuteBatchDmlRequest) Reset 

func (x *ExecuteBatchDmlRequest) Reset()

func (*ExecuteBatchDmlRequest) String 

func (x *ExecuteBatchDmlRequest) String() string

type ExecuteBatchDmlRequest_Statement 

type ExecuteBatchDmlRequest_Statement struct {

	// Required. The DML string.
	Sql string `protobuf:"bytes,1,opt,name=sql,proto3" json:"sql,omitempty"`
	// Parameter names and values that bind to placeholders in the DML string.
	//
	// A parameter placeholder consists of the `@` character followed by the
	// parameter name (for example, `@firstName`). Parameter names can contain
	// letters, numbers, and underscores.
	//
	// Parameters can appear anywhere that a literal value is expected.  The
	// same parameter name can be used more than once, for example:
	//
	// `"WHERE id > @msg_id AND id < @msg_id + 100"`
	//
	// It is an error to execute a SQL statement with unbound parameters.
	Params *structpb.Struct `protobuf:"bytes,2,opt,name=params,proto3" json:"params,omitempty"`
	// It is not always possible for Cloud Spanner to infer the right SQL type
	// from a JSON value.  For example, values of type `BYTES` and values
	// of type `STRING` both appear in [params][google.spanner.v1.ExecuteBatchDmlRequest.Statement.params] as JSON strings.
	//
	// In these cases, `param_types` can be used to specify the exact
	// SQL type for some or all of the SQL statement parameters. See the
	// definition of [Type][google.spanner.v1.Type] for more information
	// about SQL types.
	ParamTypes map[string]*Type `` /* 179-byte string literal not displayed */
	// contains filtered or unexported fields
}

A single DML statement.

func (*ExecuteBatchDmlRequest_Statement) Descriptor deprecated 

func (*ExecuteBatchDmlRequest_Statement) Descriptor() ([]byte, []int)

Deprecated: Use ExecuteBatchDmlRequest_Statement.ProtoReflect.Descriptor instead.

func (*ExecuteBatchDmlRequest_Statement) GetParamTypes 

func (x *ExecuteBatchDmlRequest_Statement) GetParamTypes() map[string]*Type

func (*ExecuteBatchDmlRequest_Statement) GetParams 

func (x *ExecuteBatchDmlRequest_Statement) GetParams() *structpb.Struct

func (*ExecuteBatchDmlRequest_Statement) GetSql 

func (x *ExecuteBatchDmlRequest_Statement) GetSql() string

func (*ExecuteBatchDmlRequest_Statement) ProtoMessage 

func (*ExecuteBatchDmlRequest_Statement) ProtoMessage()

func (*ExecuteBatchDmlRequest_Statement) ProtoReflect 

func (x *ExecuteBatchDmlRequest_Statement) ProtoReflect() protoreflect.Message

func (*ExecuteBatchDmlRequest_Statement) Reset 

func (x *ExecuteBatchDmlRequest_Statement) Reset()

func (*ExecuteBatchDmlRequest_Statement) String 

func (x *ExecuteBatchDmlRequest_Statement) String() string

type ExecuteBatchDmlResponse 

type ExecuteBatchDmlResponse struct {

	// One [ResultSet][google.spanner.v1.ResultSet] for each statement in the request that ran successfully,
	// in the same order as the statements in the request. Each [ResultSet][google.spanner.v1.ResultSet] does
	// not contain any rows. The [ResultSetStats][google.spanner.v1.ResultSetStats] in each [ResultSet][google.spanner.v1.ResultSet] contain
	// the number of rows modified by the statement.
	//
	// Only the first [ResultSet][google.spanner.v1.ResultSet] in the response contains valid
	// [ResultSetMetadata][google.spanner.v1.ResultSetMetadata].
	ResultSets []*ResultSet `protobuf:"bytes,1,rep,name=result_sets,json=resultSets,proto3" json:"result_sets,omitempty"`
	// If all DML statements are executed successfully, the status is `OK`.
	// Otherwise, the error status of the first failed statement.
	Status *status.Status `protobuf:"bytes,2,opt,name=status,proto3" json:"status,omitempty"`
	// contains filtered or unexported fields
}

The response for [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml]. Contains a list of ResultSet[google.spanner.v1.ResultSet] messages, one for each DML statement that has successfully executed, in the same order as the statements in the request. If a statement fails, the status in the response body identifies the cause of the failure.

To check for DML statements that failed, use the following approach:

  1. Check the status in the response message. The [google.rpc.Code][google.rpc.Code] enum value `OK` indicates that all statements were executed successfully.
  2. If the status was not `OK`, check the number of result sets in the response. If the response contains `N` ResultSet[google.spanner.v1.ResultSet] messages, then statement `N+1` in the request failed.

Example 1:

* Request: 5 DML statements, all executed successfully. * Response: 5 ResultSet[google.spanner.v1.ResultSet] messages, with the status `OK`.

Example 2:

  • Request: 5 DML statements. The third statement has a syntax error.
  • Response: 2 ResultSet[google.spanner.v1.ResultSet] messages, and a syntax error (`INVALID_ARGUMENT`) status. The number of ResultSet[google.spanner.v1.ResultSet] messages indicates that the third statement failed, and the fourth and fifth statements were not executed.

func (*ExecuteBatchDmlResponse) Descriptor deprecated 

func (*ExecuteBatchDmlResponse) Descriptor() ([]byte, []int)

Deprecated: Use ExecuteBatchDmlResponse.ProtoReflect.Descriptor instead.

func (*ExecuteBatchDmlResponse) GetResultSets 

func (x *ExecuteBatchDmlResponse) GetResultSets() []*ResultSet

func (*ExecuteBatchDmlResponse) GetStatus 

func (x *ExecuteBatchDmlResponse) GetStatus() *status.Status

func (*ExecuteBatchDmlResponse) ProtoMessage 

func (*ExecuteBatchDmlResponse) ProtoMessage()

func (*ExecuteBatchDmlResponse) ProtoReflect 

func (x *ExecuteBatchDmlResponse) ProtoReflect() protoreflect.Message

func (*ExecuteBatchDmlResponse) Reset 

func (x *ExecuteBatchDmlResponse) Reset()

func (*ExecuteBatchDmlResponse) String 

func (x *ExecuteBatchDmlResponse) String() string

type ExecuteSqlRequest 

type ExecuteSqlRequest struct {

	// Required. The session in which the SQL query should be performed.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// The transaction to use.
	//
	// For queries, if none is provided, the default is a temporary read-only
	// transaction with strong concurrency.
	//
	// Standard DML statements require a read-write transaction. To protect
	// against replays, single-use transactions are not supported.  The caller
	// must either supply an existing transaction ID or begin a new transaction.
	//
	// Partitioned DML requires an existing Partitioned DML transaction ID.
	Transaction *TransactionSelector `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// Required. The SQL string.
	Sql string `protobuf:"bytes,3,opt,name=sql,proto3" json:"sql,omitempty"`
	// Parameter names and values that bind to placeholders in the SQL string.
	//
	// A parameter placeholder consists of the `@` character followed by the
	// parameter name (for example, `@firstName`). Parameter names can contain
	// letters, numbers, and underscores.
	//
	// Parameters can appear anywhere that a literal value is expected.  The same
	// parameter name can be used more than once, for example:
	//
	// `"WHERE id > @msg_id AND id < @msg_id + 100"`
	//
	// It is an error to execute a SQL statement with unbound parameters.
	Params *structpb.Struct `protobuf:"bytes,4,opt,name=params,proto3" json:"params,omitempty"`
	// It is not always possible for Cloud Spanner to infer the right SQL type
	// from a JSON value.  For example, values of type `BYTES` and values
	// of type `STRING` both appear in [params][google.spanner.v1.ExecuteSqlRequest.params] as JSON strings.
	//
	// In these cases, `param_types` can be used to specify the exact
	// SQL type for some or all of the SQL statement parameters. See the
	// definition of [Type][google.spanner.v1.Type] for more information
	// about SQL types.
	ParamTypes map[string]*Type `` /* 179-byte string literal not displayed */
	// If this request is resuming a previously interrupted SQL statement
	// execution, `resume_token` should be copied from the last
	// [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the interruption. Doing this
	// enables the new SQL statement execution to resume where the last one left
	// off. The rest of the request parameters must exactly match the
	// request that yielded this token.
	ResumeToken []byte `protobuf:"bytes,6,opt,name=resume_token,json=resumeToken,proto3" json:"resume_token,omitempty"`
	// Used to control the amount of debugging information returned in
	// [ResultSetStats][google.spanner.v1.ResultSetStats]. If [partition_token][google.spanner.v1.ExecuteSqlRequest.partition_token] is set, [query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode] can only
	// be set to [QueryMode.NORMAL][google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL].
	QueryMode ExecuteSqlRequest_QueryMode `` /* 140-byte string literal not displayed */
	// If present, results will be restricted to the specified partition
	// previously created using PartitionQuery().  There must be an exact
	// match for the values of fields common to this message and the
	// PartitionQueryRequest message used to create this partition_token.
	PartitionToken []byte `protobuf:"bytes,8,opt,name=partition_token,json=partitionToken,proto3" json:"partition_token,omitempty"`
	// A per-transaction sequence number used to identify this request. This field
	// makes each request idempotent such that if the request is received multiple
	// times, at most one will succeed.
	//
	// The sequence number must be monotonically increasing within the
	// transaction. If a request arrives for the first time with an out-of-order
	// sequence number, the transaction may be aborted. Replays of previously
	// handled requests will yield the same response as the first execution.
	//
	// Required for DML statements. Ignored for queries.
	Seqno int64 `protobuf:"varint,9,opt,name=seqno,proto3" json:"seqno,omitempty"`
	// Query optimizer configuration to use for the given query.
	QueryOptions *ExecuteSqlRequest_QueryOptions `protobuf:"bytes,10,opt,name=query_options,json=queryOptions,proto3" json:"query_options,omitempty"`
	// contains filtered or unexported fields
}

The request for [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].

func (*ExecuteSqlRequest) Descriptor deprecated 

func (*ExecuteSqlRequest) Descriptor() ([]byte, []int)

Deprecated: Use ExecuteSqlRequest.ProtoReflect.Descriptor instead.

func (*ExecuteSqlRequest) GetParamTypes 

func (x *ExecuteSqlRequest) GetParamTypes() map[string]*Type

func (*ExecuteSqlRequest) GetParams 

func (x *ExecuteSqlRequest) GetParams() *structpb.Struct

func (*ExecuteSqlRequest) GetPartitionToken 

func (x *ExecuteSqlRequest) GetPartitionToken() []byte

func (*ExecuteSqlRequest) GetQueryMode 

func (x *ExecuteSqlRequest) GetQueryMode() ExecuteSqlRequest_QueryMode

func (*ExecuteSqlRequest) GetQueryOptions 

func (x *ExecuteSqlRequest) GetQueryOptions() *ExecuteSqlRequest_QueryOptions

func (*ExecuteSqlRequest) GetResumeToken 

func (x *ExecuteSqlRequest) GetResumeToken() []byte

func (*ExecuteSqlRequest) GetSeqno 

func (x *ExecuteSqlRequest) GetSeqno() int64

func (*ExecuteSqlRequest) GetSession 

func (x *ExecuteSqlRequest) GetSession() string

func (*ExecuteSqlRequest) GetSql 

func (x *ExecuteSqlRequest) GetSql() string

func (*ExecuteSqlRequest) GetTransaction 

func (x *ExecuteSqlRequest) GetTransaction() *TransactionSelector

func (*ExecuteSqlRequest) ProtoMessage 

func (*ExecuteSqlRequest) ProtoMessage()

func (*ExecuteSqlRequest) ProtoReflect 

func (x *ExecuteSqlRequest) ProtoReflect() protoreflect.Message

func (*ExecuteSqlRequest) Reset 

func (x *ExecuteSqlRequest) Reset()

func (*ExecuteSqlRequest) String 

func (x *ExecuteSqlRequest) String() string

type ExecuteSqlRequest_QueryMode 

type ExecuteSqlRequest_QueryMode int32

Mode in which the statement must be processed. 

const (
	// The default mode. Only the statement results are returned.
	ExecuteSqlRequest_NORMAL ExecuteSqlRequest_QueryMode = 0
	// This mode returns only the query plan, without any results or
	// execution statistics information.
	ExecuteSqlRequest_PLAN ExecuteSqlRequest_QueryMode = 1
	// This mode returns both the query plan and the execution statistics along
	// with the results.
	ExecuteSqlRequest_PROFILE ExecuteSqlRequest_QueryMode = 2
)

func (ExecuteSqlRequest_QueryMode) Descriptor 

func (ExecuteSqlRequest_QueryMode) Descriptor() protoreflect.EnumDescriptor

func (ExecuteSqlRequest_QueryMode) Enum 

func (x ExecuteSqlRequest_QueryMode) Enum() *ExecuteSqlRequest_QueryMode

func (ExecuteSqlRequest_QueryMode) EnumDescriptor deprecated 

func (ExecuteSqlRequest_QueryMode) EnumDescriptor() ([]byte, []int)

Deprecated: Use ExecuteSqlRequest_QueryMode.Descriptor instead.

func (ExecuteSqlRequest_QueryMode) Number 

func (x ExecuteSqlRequest_QueryMode) Number() protoreflect.EnumNumber

func (ExecuteSqlRequest_QueryMode) String 

func (x ExecuteSqlRequest_QueryMode) String() string

func (ExecuteSqlRequest_QueryMode) Type 

func (ExecuteSqlRequest_QueryMode) Type() protoreflect.EnumType

type ExecuteSqlRequest_QueryOptions 

type ExecuteSqlRequest_QueryOptions struct {

	// An option to control the selection of optimizer version.
	//
	// This parameter allows individual queries to pick different query
	// optimizer versions.
	//
	// Specifying "latest" as a value instructs Cloud Spanner to use the
	// latest supported query optimizer version. If not specified, Cloud Spanner
	// uses optimizer version set at the database level options. Any other
	// positive integer (from the list of supported optimizer versions)
	// overrides the default optimizer version for query execution.
	// The list of supported optimizer versions can be queried from
	// SPANNER_SYS.SUPPORTED_OPTIMIZER_VERSIONS. Executing a SQL statement
	// with an invalid optimizer version will fail with a syntax error
	// (`INVALID_ARGUMENT`) status.
	//
	// The `optimizer_version` statement hint has precedence over this setting.
	OptimizerVersion string `protobuf:"bytes,1,opt,name=optimizer_version,json=optimizerVersion,proto3" json:"optimizer_version,omitempty"`
	// contains filtered or unexported fields
}

Query optimizer configuration.

func (*ExecuteSqlRequest_QueryOptions) Descriptor deprecated 

func (*ExecuteSqlRequest_QueryOptions) Descriptor() ([]byte, []int)

Deprecated: Use ExecuteSqlRequest_QueryOptions.ProtoReflect.Descriptor instead.

func (*ExecuteSqlRequest_QueryOptions) GetOptimizerVersion 

func (x *ExecuteSqlRequest_QueryOptions) GetOptimizerVersion() string

func (*ExecuteSqlRequest_QueryOptions) ProtoMessage 

func (*ExecuteSqlRequest_QueryOptions) ProtoMessage()

func (*ExecuteSqlRequest_QueryOptions) ProtoReflect 

func (x *ExecuteSqlRequest_QueryOptions) ProtoReflect() protoreflect.Message

func (*ExecuteSqlRequest_QueryOptions) Reset 

func (x *ExecuteSqlRequest_QueryOptions) Reset()

func (*ExecuteSqlRequest_QueryOptions) String 

func (x *ExecuteSqlRequest_QueryOptions) String() string

type GetSessionRequest 

type GetSessionRequest struct {

	// Required. The name of the session to retrieve.
	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	// contains filtered or unexported fields
}

The request for [GetSession][google.spanner.v1.Spanner.GetSession].

func (*GetSessionRequest) Descriptor deprecated 

func (*GetSessionRequest) Descriptor() ([]byte, []int)

Deprecated: Use GetSessionRequest.ProtoReflect.Descriptor instead.

func (*GetSessionRequest) GetName 

func (x *GetSessionRequest) GetName() string

func (*GetSessionRequest) ProtoMessage 

func (*GetSessionRequest) ProtoMessage()

func (*GetSessionRequest) ProtoReflect 

func (x *GetSessionRequest) ProtoReflect() protoreflect.Message

func (*GetSessionRequest) Reset 

func (x *GetSessionRequest) Reset()

func (*GetSessionRequest) String 

func (x *GetSessionRequest) String() string

type KeyRange 

type KeyRange struct {

	// The start key must be provided. It can be either closed or open.
	//
	// Types that are assignable to StartKeyType:
	//	*KeyRange_StartClosed
	//	*KeyRange_StartOpen
	StartKeyType isKeyRange_StartKeyType `protobuf_oneof:"start_key_type"`
	// The end key must be provided. It can be either closed or open.
	//
	// Types that are assignable to EndKeyType:
	//	*KeyRange_EndClosed
	//	*KeyRange_EndOpen
	EndKeyType isKeyRange_EndKeyType `protobuf_oneof:"end_key_type"`
	// contains filtered or unexported fields
}

KeyRange represents a range of rows in a table or index.

A range has a start key and an end key. These keys can be open or closed, indicating if the range includes rows with that key.

Keys are represented by lists, where the ith value in the list corresponds to the ith component of the table or index primary key. Individual values are encoded as described [here][google.spanner.v1.TypeCode].

For example, consider the following table definition: 

CREATE TABLE UserEvents (
  UserName STRING(MAX),
  EventDate STRING(10)
) PRIMARY KEY(UserName, EventDate);

The following keys name rows in this table: 

["Bob", "2014-09-23"]
["Alfred", "2015-06-12"]

Since the `UserEvents` table's `PRIMARY KEY` clause names two columns, each `UserEvents` key has two elements; the first is the `UserName`, and the second is the `EventDate`.

Key ranges with multiple components are interpreted lexicographically by component using the table or index key's declared sort order. For example, the following range returns all events for user `"Bob"` that occurred in the year 2015: 

"start_closed": ["Bob", "2015-01-01"]
"end_closed": ["Bob", "2015-12-31"]

Start and end keys can omit trailing key components. This affects the inclusion and exclusion of rows that exactly match the provided key components: if the key is closed, then rows that exactly match the provided components are included; if the key is open, then rows that exactly match are not included.

For example, the following range includes all events for `"Bob"` that occurred during and after the year 2000: 

"start_closed": ["Bob", "2000-01-01"]
"end_closed": ["Bob"]

The next example retrieves all events for `"Bob"`: 

"start_closed": ["Bob"]
"end_closed": ["Bob"]

To retrieve events before the year 2000: 

"start_closed": ["Bob"]
"end_open": ["Bob", "2000-01-01"]

The following range includes all rows in the table: 

"start_closed": []
"end_closed": []

This range returns all users whose `UserName` begins with any character from A to C: 

"start_closed": ["A"]
"end_open": ["D"]

This range returns all users whose `UserName` begins with B: 

"start_closed": ["B"]
"end_open": ["C"]

Key ranges honor column sort order. For example, suppose a table is defined as follows: 

CREATE TABLE DescendingSortedTable {
  Key INT64,
  ...
) PRIMARY KEY(Key DESC);

The following range retrieves all rows with key values between 1 and 100 inclusive: 

"start_closed": ["100"]
"end_closed": ["1"]

Note that 100 is passed as the start, and 1 is passed as the end, because `Key` is a descending column in the schema.

func (*KeyRange) Descriptor deprecated 

func (*KeyRange) Descriptor() ([]byte, []int)

Deprecated: Use KeyRange.ProtoReflect.Descriptor instead.

func (*KeyRange) GetEndClosed 

func (x *KeyRange) GetEndClosed() *structpb.ListValue

func (*KeyRange) GetEndKeyType 

func (m *KeyRange) GetEndKeyType() isKeyRange_EndKeyType

func (*KeyRange) GetEndOpen 

func (x *KeyRange) GetEndOpen() *structpb.ListValue

func (*KeyRange) GetStartClosed 

func (x *KeyRange) GetStartClosed() *structpb.ListValue

func (*KeyRange) GetStartKeyType 

func (m *KeyRange) GetStartKeyType() isKeyRange_StartKeyType

func (*KeyRange) GetStartOpen 

func (x *KeyRange) GetStartOpen() *structpb.ListValue

func (*KeyRange) ProtoMessage 

func (*KeyRange) ProtoMessage()

func (*KeyRange) ProtoReflect 

func (x *KeyRange) ProtoReflect() protoreflect.Message

func (*KeyRange) Reset 

func (x *KeyRange) Reset()

func (*KeyRange) String 

func (x *KeyRange) String() string

type KeyRange_EndClosed 

type KeyRange_EndClosed struct {
	// If the end is closed, then the range includes all rows whose
	// first `len(end_closed)` key columns exactly match `end_closed`.
	EndClosed *structpb.ListValue `protobuf:"bytes,3,opt,name=end_closed,json=endClosed,proto3,oneof"`
}

type KeyRange_EndOpen 

type KeyRange_EndOpen struct {
	// If the end is open, then the range excludes rows whose first
	// `len(end_open)` key columns exactly match `end_open`.
	EndOpen *structpb.ListValue `protobuf:"bytes,4,opt,name=end_open,json=endOpen,proto3,oneof"`
}

type KeyRange_StartClosed 

type KeyRange_StartClosed struct {
	// If the start is closed, then the range includes all rows whose
	// first `len(start_closed)` key columns exactly match `start_closed`.
	StartClosed *structpb.ListValue `protobuf:"bytes,1,opt,name=start_closed,json=startClosed,proto3,oneof"`
}

type KeyRange_StartOpen 

type KeyRange_StartOpen struct {
	// If the start is open, then the range excludes rows whose first
	// `len(start_open)` key columns exactly match `start_open`.
	StartOpen *structpb.ListValue `protobuf:"bytes,2,opt,name=start_open,json=startOpen,proto3,oneof"`
}

type KeySet 

type KeySet struct {

	// A list of specific keys. Entries in `keys` should have exactly as
	// many elements as there are columns in the primary or index key
	// with which this `KeySet` is used.  Individual key values are
	// encoded as described [here][google.spanner.v1.TypeCode].
	Keys []*structpb.ListValue `protobuf:"bytes,1,rep,name=keys,proto3" json:"keys,omitempty"`
	// A list of key ranges. See [KeyRange][google.spanner.v1.KeyRange] for more information about
	// key range specifications.
	Ranges []*KeyRange `protobuf:"bytes,2,rep,name=ranges,proto3" json:"ranges,omitempty"`
	// For convenience `all` can be set to `true` to indicate that this
	// `KeySet` matches all keys in the table or index. Note that any keys
	// specified in `keys` or `ranges` are only yielded once.
	All bool `protobuf:"varint,3,opt,name=all,proto3" json:"all,omitempty"`
	// contains filtered or unexported fields
}

`KeySet` defines a collection of Cloud Spanner keys and/or key ranges. All the keys are expected to be in the same table or index. The keys need not be sorted in any particular way.

If the same key is specified multiple times in the set (for example if two ranges, two keys, or a key and a range overlap), Cloud Spanner behaves as if the key were only specified once.

func (*KeySet) Descriptor deprecated 

func (*KeySet) Descriptor() ([]byte, []int)

Deprecated: Use KeySet.ProtoReflect.Descriptor instead.

func (*KeySet) GetAll 

func (x *KeySet) GetAll() bool

func (*KeySet) GetKeys 

func (x *KeySet) GetKeys() []*structpb.ListValue

func (*KeySet) GetRanges 

func (x *KeySet) GetRanges() []*KeyRange

func (*KeySet) ProtoMessage 

func (*KeySet) ProtoMessage()

func (*KeySet) ProtoReflect 

func (x *KeySet) ProtoReflect() protoreflect.Message

func (*KeySet) Reset 

func (x *KeySet) Reset()

func (*KeySet) String 

func (x *KeySet) String() string

type ListSessionsRequest 

type ListSessionsRequest struct {

	// Required. The database in which to list sessions.
	Database string `protobuf:"bytes,1,opt,name=database,proto3" json:"database,omitempty"`
	// Number of sessions to be returned in the response. If 0 or less, defaults
	// to the server's maximum allowed page size.
	PageSize int32 `protobuf:"varint,2,opt,name=page_size,json=pageSize,proto3" json:"page_size,omitempty"`
	// If non-empty, `page_token` should contain a
	// [next_page_token][google.spanner.v1.ListSessionsResponse.next_page_token] from a previous
	// [ListSessionsResponse][google.spanner.v1.ListSessionsResponse].
	PageToken string `protobuf:"bytes,3,opt,name=page_token,json=pageToken,proto3" json:"page_token,omitempty"`
	// An expression for filtering the results of the request. Filter rules are
	// case insensitive. The fields eligible for filtering are:
	//
	//   * `labels.key` where key is the name of a label
	//
	// Some examples of using filters are:
	//
	//   * `labels.env:*` --> The session has the label "env".
	//   * `labels.env:dev` --> The session has the label "env" and the value of
	//                        the label contains the string "dev".
	Filter string `protobuf:"bytes,4,opt,name=filter,proto3" json:"filter,omitempty"`
	// contains filtered or unexported fields
}

The request for [ListSessions][google.spanner.v1.Spanner.ListSessions].

func (*ListSessionsRequest) Descriptor deprecated 

func (*ListSessionsRequest) Descriptor() ([]byte, []int)

Deprecated: Use ListSessionsRequest.ProtoReflect.Descriptor instead.

func (*ListSessionsRequest) GetDatabase 

func (x *ListSessionsRequest) GetDatabase() string

func (*ListSessionsRequest) GetFilter 

func (x *ListSessionsRequest) GetFilter() string

func (*ListSessionsRequest) GetPageSize 

func (x *ListSessionsRequest) GetPageSize() int32

func (*ListSessionsRequest) GetPageToken 

func (x *ListSessionsRequest) GetPageToken() string

func (*ListSessionsRequest) ProtoMessage 

func (*ListSessionsRequest) ProtoMessage()

func (*ListSessionsRequest) ProtoReflect 

func (x *ListSessionsRequest) ProtoReflect() protoreflect.Message

func (*ListSessionsRequest) Reset 

func (x *ListSessionsRequest) Reset()

func (*ListSessionsRequest) String 

func (x *ListSessionsRequest) String() string

type ListSessionsResponse 

type ListSessionsResponse struct {

	// The list of requested sessions.
	Sessions []*Session `protobuf:"bytes,1,rep,name=sessions,proto3" json:"sessions,omitempty"`
	// `next_page_token` can be sent in a subsequent
	// [ListSessions][google.spanner.v1.Spanner.ListSessions] call to fetch more of the matching
	// sessions.
	NextPageToken string `protobuf:"bytes,2,opt,name=next_page_token,json=nextPageToken,proto3" json:"next_page_token,omitempty"`
	// contains filtered or unexported fields
}

The response for [ListSessions][google.spanner.v1.Spanner.ListSessions].

func (*ListSessionsResponse) Descriptor deprecated 

func (*ListSessionsResponse) Descriptor() ([]byte, []int)

Deprecated: Use ListSessionsResponse.ProtoReflect.Descriptor instead.

func (*ListSessionsResponse) GetNextPageToken 

func (x *ListSessionsResponse) GetNextPageToken() string

func (*ListSessionsResponse) GetSessions 

func (x *ListSessionsResponse) GetSessions() []*Session

func (*ListSessionsResponse) ProtoMessage 

func (*ListSessionsResponse) ProtoMessage()

func (*ListSessionsResponse) ProtoReflect 

func (x *ListSessionsResponse) ProtoReflect() protoreflect.Message

func (*ListSessionsResponse) Reset 

func (x *ListSessionsResponse) Reset()

func (*ListSessionsResponse) String 

func (x *ListSessionsResponse) String() string

type Mutation 

type Mutation struct {

	// Required. The operation to perform.
	//
	// Types that are assignable to Operation:
	//	*Mutation_Insert
	//	*Mutation_Update
	//	*Mutation_InsertOrUpdate
	//	*Mutation_Replace
	//	*Mutation_Delete_
	Operation isMutation_Operation `protobuf_oneof:"operation"`
	// contains filtered or unexported fields
}

A modification to one or more Cloud Spanner rows. Mutations can be applied to a Cloud Spanner database by sending them in a [Commit][google.spanner.v1.Spanner.Commit] call.

func (*Mutation) Descriptor deprecated 

func (*Mutation) Descriptor() ([]byte, []int)

Deprecated: Use Mutation.ProtoReflect.Descriptor instead.

func (*Mutation) GetDelete 

func (x *Mutation) GetDelete() *Mutation_Delete

func (*Mutation) GetInsert 

func (x *Mutation) GetInsert() *Mutation_Write

func (*Mutation) GetInsertOrUpdate 

func (x *Mutation) GetInsertOrUpdate() *Mutation_Write

func (*Mutation) GetOperation 

func (m *Mutation) GetOperation() isMutation_Operation

func (*Mutation) GetReplace 

func (x *Mutation) GetReplace() *Mutation_Write

func (*Mutation) GetUpdate 

func (x *Mutation) GetUpdate() *Mutation_Write

func (*Mutation) ProtoMessage 

func (*Mutation) ProtoMessage()

func (*Mutation) ProtoReflect 

func (x *Mutation) ProtoReflect() protoreflect.Message

func (*Mutation) Reset 

func (x *Mutation) Reset()

func (*Mutation) String 

func (x *Mutation) String() string

type Mutation_Delete 

type Mutation_Delete struct {

	// Required. The table whose rows will be deleted.
	Table string `protobuf:"bytes,1,opt,name=table,proto3" json:"table,omitempty"`
	// Required. The primary keys of the rows within [table][google.spanner.v1.Mutation.Delete.table] to delete.  The
	// primary keys must be specified in the order in which they appear in the
	// `PRIMARY KEY()` clause of the table's equivalent DDL statement (the DDL
	// statement used to create the table).
	// Delete is idempotent. The transaction will succeed even if some or all
	// rows do not exist.
	KeySet *KeySet `protobuf:"bytes,2,opt,name=key_set,json=keySet,proto3" json:"key_set,omitempty"`
	// contains filtered or unexported fields
}

Arguments to [delete][google.spanner.v1.Mutation.delete] operations.

func (*Mutation_Delete) Descriptor deprecated 

func (*Mutation_Delete) Descriptor() ([]byte, []int)

Deprecated: Use Mutation_Delete.ProtoReflect.Descriptor instead.

func (*Mutation_Delete) GetKeySet 

func (x *Mutation_Delete) GetKeySet() *KeySet

func (*Mutation_Delete) GetTable 

func (x *Mutation_Delete) GetTable() string

func (*Mutation_Delete) ProtoMessage 

func (*Mutation_Delete) ProtoMessage()

func (*Mutation_Delete) ProtoReflect 

func (x *Mutation_Delete) ProtoReflect() protoreflect.Message

func (*Mutation_Delete) Reset 

func (x *Mutation_Delete) Reset()

func (*Mutation_Delete) String 

func (x *Mutation_Delete) String() string

type Mutation_Delete_ 

type Mutation_Delete_ struct {
	// Delete rows from a table. Succeeds whether or not the named
	// rows were present.
	Delete *Mutation_Delete `protobuf:"bytes,5,opt,name=delete,proto3,oneof"`
}

type Mutation_Insert 

type Mutation_Insert struct {
	// Insert new rows in a table. If any of the rows already exist,
	// the write or transaction fails with error `ALREADY_EXISTS`.
	Insert *Mutation_Write `protobuf:"bytes,1,opt,name=insert,proto3,oneof"`
}

type Mutation_InsertOrUpdate 

type Mutation_InsertOrUpdate struct {
	// Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, then
	// its column values are overwritten with the ones provided. Any
	// column values not explicitly written are preserved.
	//
	// When using [insert_or_update][google.spanner.v1.Mutation.insert_or_update], just as when using [insert][google.spanner.v1.Mutation.insert], all `NOT
	// NULL` columns in the table must be given a value. This holds true
	// even when the row already exists and will therefore actually be updated.
	InsertOrUpdate *Mutation_Write `protobuf:"bytes,3,opt,name=insert_or_update,json=insertOrUpdate,proto3,oneof"`
}

type Mutation_Replace 

type Mutation_Replace struct {
	// Like [insert][google.spanner.v1.Mutation.insert], except that if the row already exists, it is
	// deleted, and the column values provided are inserted
	// instead. Unlike [insert_or_update][google.spanner.v1.Mutation.insert_or_update], this means any values not
	// explicitly written become `NULL`.
	//
	// In an interleaved table, if you create the child table with the
	// `ON DELETE CASCADE` annotation, then replacing a parent row
	// also deletes the child rows. Otherwise, you must delete the
	// child rows before you replace the parent row.
	Replace *Mutation_Write `protobuf:"bytes,4,opt,name=replace,proto3,oneof"`
}

type Mutation_Update 

type Mutation_Update struct {
	// Update existing rows in a table. If any of the rows does not
	// already exist, the transaction fails with error `NOT_FOUND`.
	Update *Mutation_Write `protobuf:"bytes,2,opt,name=update,proto3,oneof"`
}

type Mutation_Write 

type Mutation_Write struct {

	// Required. The table whose rows will be written.
	Table string `protobuf:"bytes,1,opt,name=table,proto3" json:"table,omitempty"`
	// The names of the columns in [table][google.spanner.v1.Mutation.Write.table] to be written.
	//
	// The list of columns must contain enough columns to allow
	// Cloud Spanner to derive values for all primary key columns in the
	// row(s) to be modified.
	Columns []string `protobuf:"bytes,2,rep,name=columns,proto3" json:"columns,omitempty"`
	// The values to be written. `values` can contain more than one
	// list of values. If it does, then multiple rows are written, one
	// for each entry in `values`. Each list in `values` must have
	// exactly as many entries as there are entries in [columns][google.spanner.v1.Mutation.Write.columns]
	// above. Sending multiple lists is equivalent to sending multiple
	// `Mutation`s, each containing one `values` entry and repeating
	// [table][google.spanner.v1.Mutation.Write.table] and [columns][google.spanner.v1.Mutation.Write.columns]. Individual values in each list are
	// encoded as described [here][google.spanner.v1.TypeCode].
	Values []*structpb.ListValue `protobuf:"bytes,3,rep,name=values,proto3" json:"values,omitempty"`
	// contains filtered or unexported fields
}

Arguments to [insert][google.spanner.v1.Mutation.insert], [update][google.spanner.v1.Mutation.update], [insert_or_update][google.spanner.v1.Mutation.insert_or_update], and [replace][google.spanner.v1.Mutation.replace] operations.

func (*Mutation_Write) Descriptor deprecated 

func (*Mutation_Write) Descriptor() ([]byte, []int)

Deprecated: Use Mutation_Write.ProtoReflect.Descriptor instead.

func (*Mutation_Write) GetColumns 

func (x *Mutation_Write) GetColumns() []string

func (*Mutation_Write) GetTable 

func (x *Mutation_Write) GetTable() string

func (*Mutation_Write) GetValues 

func (x *Mutation_Write) GetValues() []*structpb.ListValue

func (*Mutation_Write) ProtoMessage 

func (*Mutation_Write) ProtoMessage()

func (*Mutation_Write) ProtoReflect 

func (x *Mutation_Write) ProtoReflect() protoreflect.Message

func (*Mutation_Write) Reset 

func (x *Mutation_Write) Reset()

func (*Mutation_Write) String 

func (x *Mutation_Write) String() string

type PartialResultSet 

type PartialResultSet struct {

	// Metadata about the result set, such as row type information.
	// Only present in the first response.
	Metadata *ResultSetMetadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
	// A streamed result set consists of a stream of values, which might
	// be split into many `PartialResultSet` messages to accommodate
	// large rows and/or large values. Every N complete values defines a
	// row, where N is equal to the number of entries in
	// [metadata.row_type.fields][google.spanner.v1.StructType.fields].
	//
	// Most values are encoded based on type as described
	// [here][google.spanner.v1.TypeCode].
	//
	// It is possible that the last value in values is "chunked",
	// meaning that the rest of the value is sent in subsequent
	// `PartialResultSet`(s). This is denoted by the [chunked_value][google.spanner.v1.PartialResultSet.chunked_value]
	// field. Two or more chunked values can be merged to form a
	// complete value as follows:
	//
	//   * `bool/number/null`: cannot be chunked
	//   * `string`: concatenate the strings
	//   * `list`: concatenate the lists. If the last element in a list is a
	//     `string`, `list`, or `object`, merge it with the first element in
	//     the next list by applying these rules recursively.
	//   * `object`: concatenate the (field name, field value) pairs. If a
	//     field name is duplicated, then apply these rules recursively
	//     to merge the field values.
	//
	// Some examples of merging:
	//
	//     # Strings are concatenated.
	//     "foo", "bar" => "foobar"
	//
	//     # Lists of non-strings are concatenated.
	//     [2, 3], [4] => [2, 3, 4]
	//
	//     # Lists are concatenated, but the last and first elements are merged
	//     # because they are strings.
	//     ["a", "b"], ["c", "d"] => ["a", "bc", "d"]
	//
	//     # Lists are concatenated, but the last and first elements are merged
	//     # because they are lists. Recursively, the last and first elements
	//     # of the inner lists are merged because they are strings.
	//     ["a", ["b", "c"]], [["d"], "e"] => ["a", ["b", "cd"], "e"]
	//
	//     # Non-overlapping object fields are combined.
	//     {"a": "1"}, {"b": "2"} => {"a": "1", "b": 2"}
	//
	//     # Overlapping object fields are merged.
	//     {"a": "1"}, {"a": "2"} => {"a": "12"}
	//
	//     # Examples of merging objects containing lists of strings.
	//     {"a": ["1"]}, {"a": ["2"]} => {"a": ["12"]}
	//
	// For a more complete example, suppose a streaming SQL query is
	// yielding a result set whose rows contain a single string
	// field. The following `PartialResultSet`s might be yielded:
	//
	//     {
	//       "metadata": { ... }
	//       "values": ["Hello", "W"]
	//       "chunked_value": true
	//       "resume_token": "Af65..."
	//     }
	//     {
	//       "values": ["orl"]
	//       "chunked_value": true
	//       "resume_token": "Bqp2..."
	//     }
	//     {
	//       "values": ["d"]
	//       "resume_token": "Zx1B..."
	//     }
	//
	// This sequence of `PartialResultSet`s encodes two rows, one
	// containing the field value `"Hello"`, and a second containing the
	// field value `"World" = "W" + "orl" + "d"`.
	Values []*structpb.Value `protobuf:"bytes,2,rep,name=values,proto3" json:"values,omitempty"`
	// If true, then the final value in [values][google.spanner.v1.PartialResultSet.values] is chunked, and must
	// be combined with more values from subsequent `PartialResultSet`s
	// to obtain a complete field value.
	ChunkedValue bool `protobuf:"varint,3,opt,name=chunked_value,json=chunkedValue,proto3" json:"chunked_value,omitempty"`
	// Streaming calls might be interrupted for a variety of reasons, such
	// as TCP connection loss. If this occurs, the stream of results can
	// be resumed by re-sending the original request and including
	// `resume_token`. Note that executing any other transaction in the
	// same session invalidates the token.
	ResumeToken []byte `protobuf:"bytes,4,opt,name=resume_token,json=resumeToken,proto3" json:"resume_token,omitempty"`
	// Query plan and execution statistics for the statement that produced this
	// streaming result set. These can be requested by setting
	// [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode] and are sent
	// only once with the last response in the stream.
	// This field will also be present in the last response for DML
	// statements.
	Stats *ResultSetStats `protobuf:"bytes,5,opt,name=stats,proto3" json:"stats,omitempty"`
	// contains filtered or unexported fields
}

Partial results from a streaming read or SQL query. Streaming reads and SQL queries better tolerate large result sets, large rows, and large values, but are a little trickier to consume.

func (*PartialResultSet) Descriptor deprecated 

func (*PartialResultSet) Descriptor() ([]byte, []int)

Deprecated: Use PartialResultSet.ProtoReflect.Descriptor instead.

func (*PartialResultSet) GetChunkedValue 

func (x *PartialResultSet) GetChunkedValue() bool

func (*PartialResultSet) GetMetadata 

func (x *PartialResultSet) GetMetadata() *ResultSetMetadata

func (*PartialResultSet) GetResumeToken 

func (x *PartialResultSet) GetResumeToken() []byte

func (*PartialResultSet) GetStats 

func (x *PartialResultSet) GetStats() *ResultSetStats

func (*PartialResultSet) GetValues 

func (x *PartialResultSet) GetValues() []*structpb.Value

func (*PartialResultSet) ProtoMessage 

func (*PartialResultSet) ProtoMessage()

func (*PartialResultSet) ProtoReflect 

func (x *PartialResultSet) ProtoReflect() protoreflect.Message

func (*PartialResultSet) Reset 

func (x *PartialResultSet) Reset()

func (*PartialResultSet) String 

func (x *PartialResultSet) String() string

type Partition 

type Partition struct {

	// This token can be passed to Read, StreamingRead, ExecuteSql, or
	// ExecuteStreamingSql requests to restrict the results to those identified by
	// this partition token.
	PartitionToken []byte `protobuf:"bytes,1,opt,name=partition_token,json=partitionToken,proto3" json:"partition_token,omitempty"`
	// contains filtered or unexported fields
}

Information returned for each partition returned in a PartitionResponse.

func (*Partition) Descriptor deprecated 

func (*Partition) Descriptor() ([]byte, []int)

Deprecated: Use Partition.ProtoReflect.Descriptor instead.

func (*Partition) GetPartitionToken 

func (x *Partition) GetPartitionToken() []byte

func (*Partition) ProtoMessage 

func (*Partition) ProtoMessage()

func (*Partition) ProtoReflect 

func (x *Partition) ProtoReflect() protoreflect.Message

func (*Partition) Reset 

func (x *Partition) Reset()

func (*Partition) String 

func (x *Partition) String() string

type PartitionOptions 

type PartitionOptions struct {

	// **Note:** This hint is currently ignored by PartitionQuery and
	// PartitionRead requests.
	//
	// The desired data size for each partition generated.  The default for this
	// option is currently 1 GiB.  This is only a hint. The actual size of each
	// partition may be smaller or larger than this size request.
	PartitionSizeBytes int64 `protobuf:"varint,1,opt,name=partition_size_bytes,json=partitionSizeBytes,proto3" json:"partition_size_bytes,omitempty"`
	// **Note:** This hint is currently ignored by PartitionQuery and
	// PartitionRead requests.
	//
	// The desired maximum number of partitions to return.  For example, this may
	// be set to the number of workers available.  The default for this option
	// is currently 10,000. The maximum value is currently 200,000.  This is only
	// a hint.  The actual number of partitions returned may be smaller or larger
	// than this maximum count request.
	MaxPartitions int64 `protobuf:"varint,2,opt,name=max_partitions,json=maxPartitions,proto3" json:"max_partitions,omitempty"`
	// contains filtered or unexported fields
}

Options for a PartitionQueryRequest and PartitionReadRequest.

func (*PartitionOptions) Descriptor deprecated 

func (*PartitionOptions) Descriptor() ([]byte, []int)

Deprecated: Use PartitionOptions.ProtoReflect.Descriptor instead.

func (*PartitionOptions) GetMaxPartitions 

func (x *PartitionOptions) GetMaxPartitions() int64

func (*PartitionOptions) GetPartitionSizeBytes 

func (x *PartitionOptions) GetPartitionSizeBytes() int64

func (*PartitionOptions) ProtoMessage 

func (*PartitionOptions) ProtoMessage()

func (*PartitionOptions) ProtoReflect 

func (x *PartitionOptions) ProtoReflect() protoreflect.Message

func (*PartitionOptions) Reset 

func (x *PartitionOptions) Reset()

func (*PartitionOptions) String 

func (x *PartitionOptions) String() string

type PartitionQueryRequest 

type PartitionQueryRequest struct {

	// Required. The session used to create the partitions.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// Read only snapshot transactions are supported, read/write and single use
	// transactions are not.
	Transaction *TransactionSelector `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// Required. The query request to generate partitions for. The request will fail if
	// the query is not root partitionable. The query plan of a root
	// partitionable query has a single distributed union operator. A distributed
	// union operator conceptually divides one or more tables into multiple
	// splits, remotely evaluates a subquery independently on each split, and
	// then unions all results.
	//
	// This must not contain DML commands, such as INSERT, UPDATE, or
	// DELETE. Use [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] with a
	// PartitionedDml transaction for large, partition-friendly DML operations.
	Sql string `protobuf:"bytes,3,opt,name=sql,proto3" json:"sql,omitempty"`
	// Parameter names and values that bind to placeholders in the SQL string.
	//
	// A parameter placeholder consists of the `@` character followed by the
	// parameter name (for example, `@firstName`). Parameter names can contain
	// letters, numbers, and underscores.
	//
	// Parameters can appear anywhere that a literal value is expected.  The same
	// parameter name can be used more than once, for example:
	//
	// `"WHERE id > @msg_id AND id < @msg_id + 100"`
	//
	// It is an error to execute a SQL statement with unbound parameters.
	Params *structpb.Struct `protobuf:"bytes,4,opt,name=params,proto3" json:"params,omitempty"`
	// It is not always possible for Cloud Spanner to infer the right SQL type
	// from a JSON value.  For example, values of type `BYTES` and values
	// of type `STRING` both appear in [params][google.spanner.v1.PartitionQueryRequest.params] as JSON strings.
	//
	// In these cases, `param_types` can be used to specify the exact
	// SQL type for some or all of the SQL query parameters. See the
	// definition of [Type][google.spanner.v1.Type] for more information
	// about SQL types.
	ParamTypes map[string]*Type `` /* 179-byte string literal not displayed */
	// Additional options that affect how many partitions are created.
	PartitionOptions *PartitionOptions `protobuf:"bytes,6,opt,name=partition_options,json=partitionOptions,proto3" json:"partition_options,omitempty"`
	// contains filtered or unexported fields
}

The request for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]

func (*PartitionQueryRequest) Descriptor deprecated 

func (*PartitionQueryRequest) Descriptor() ([]byte, []int)

Deprecated: Use PartitionQueryRequest.ProtoReflect.Descriptor instead.

func (*PartitionQueryRequest) GetParamTypes 

func (x *PartitionQueryRequest) GetParamTypes() map[string]*Type

func (*PartitionQueryRequest) GetParams 

func (x *PartitionQueryRequest) GetParams() *structpb.Struct

func (*PartitionQueryRequest) GetPartitionOptions 

func (x *PartitionQueryRequest) GetPartitionOptions() *PartitionOptions

func (*PartitionQueryRequest) GetSession 

func (x *PartitionQueryRequest) GetSession() string

func (*PartitionQueryRequest) GetSql 

func (x *PartitionQueryRequest) GetSql() string

func (*PartitionQueryRequest) GetTransaction 

func (x *PartitionQueryRequest) GetTransaction() *TransactionSelector

func (*PartitionQueryRequest) ProtoMessage 

func (*PartitionQueryRequest) ProtoMessage()

func (*PartitionQueryRequest) ProtoReflect 

func (x *PartitionQueryRequest) ProtoReflect() protoreflect.Message

func (*PartitionQueryRequest) Reset 

func (x *PartitionQueryRequest) Reset()

func (*PartitionQueryRequest) String 

func (x *PartitionQueryRequest) String() string

type PartitionReadRequest 

type PartitionReadRequest struct {

	// Required. The session used to create the partitions.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// Read only snapshot transactions are supported, read/write and single use
	// transactions are not.
	Transaction *TransactionSelector `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// Required. The name of the table in the database to be read.
	Table string `protobuf:"bytes,3,opt,name=table,proto3" json:"table,omitempty"`
	// If non-empty, the name of an index on [table][google.spanner.v1.PartitionReadRequest.table]. This index is
	// used instead of the table primary key when interpreting [key_set][google.spanner.v1.PartitionReadRequest.key_set]
	// and sorting result rows. See [key_set][google.spanner.v1.PartitionReadRequest.key_set] for further information.
	Index string `protobuf:"bytes,4,opt,name=index,proto3" json:"index,omitempty"`
	// The columns of [table][google.spanner.v1.PartitionReadRequest.table] to be returned for each row matching
	// this request.
	Columns []string `protobuf:"bytes,5,rep,name=columns,proto3" json:"columns,omitempty"`
	// Required. `key_set` identifies the rows to be yielded. `key_set` names the
	// primary keys of the rows in [table][google.spanner.v1.PartitionReadRequest.table] to be yielded, unless [index][google.spanner.v1.PartitionReadRequest.index]
	// is present. If [index][google.spanner.v1.PartitionReadRequest.index] is present, then [key_set][google.spanner.v1.PartitionReadRequest.key_set] instead names
	// index keys in [index][google.spanner.v1.PartitionReadRequest.index].
	//
	// It is not an error for the `key_set` to name rows that do not
	// exist in the database. Read yields nothing for nonexistent rows.
	KeySet *KeySet `protobuf:"bytes,6,opt,name=key_set,json=keySet,proto3" json:"key_set,omitempty"`
	// Additional options that affect how many partitions are created.
	PartitionOptions *PartitionOptions `protobuf:"bytes,9,opt,name=partition_options,json=partitionOptions,proto3" json:"partition_options,omitempty"`
	// contains filtered or unexported fields
}

The request for [PartitionRead][google.spanner.v1.Spanner.PartitionRead]

func (*PartitionReadRequest) Descriptor deprecated 

func (*PartitionReadRequest) Descriptor() ([]byte, []int)

Deprecated: Use PartitionReadRequest.ProtoReflect.Descriptor instead.

func (*PartitionReadRequest) GetColumns 

func (x *PartitionReadRequest) GetColumns() []string

func (*PartitionReadRequest) GetIndex 

func (x *PartitionReadRequest) GetIndex() string

func (*PartitionReadRequest) GetKeySet 

func (x *PartitionReadRequest) GetKeySet() *KeySet

func (*PartitionReadRequest) GetPartitionOptions 

func (x *PartitionReadRequest) GetPartitionOptions() *PartitionOptions

func (*PartitionReadRequest) GetSession 

func (x *PartitionReadRequest) GetSession() string

func (*PartitionReadRequest) GetTable 

func (x *PartitionReadRequest) GetTable() string

func (*PartitionReadRequest) GetTransaction 

func (x *PartitionReadRequest) GetTransaction() *TransactionSelector

func (*PartitionReadRequest) ProtoMessage 

func (*PartitionReadRequest) ProtoMessage()

func (*PartitionReadRequest) ProtoReflect 

func (x *PartitionReadRequest) ProtoReflect() protoreflect.Message

func (*PartitionReadRequest) Reset 

func (x *PartitionReadRequest) Reset()

func (*PartitionReadRequest) String 

func (x *PartitionReadRequest) String() string

type PartitionResponse 

type PartitionResponse struct {

	// Partitions created by this request.
	Partitions []*Partition `protobuf:"bytes,1,rep,name=partitions,proto3" json:"partitions,omitempty"`
	// Transaction created by this request.
	Transaction *Transaction `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// contains filtered or unexported fields
}

The response for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery] or [PartitionRead][google.spanner.v1.Spanner.PartitionRead]

func (*PartitionResponse) Descriptor deprecated 

func (*PartitionResponse) Descriptor() ([]byte, []int)

Deprecated: Use PartitionResponse.ProtoReflect.Descriptor instead.

func (*PartitionResponse) GetPartitions 

func (x *PartitionResponse) GetPartitions() []*Partition

func (*PartitionResponse) GetTransaction 

func (x *PartitionResponse) GetTransaction() *Transaction

func (*PartitionResponse) ProtoMessage 

func (*PartitionResponse) ProtoMessage()

func (*PartitionResponse) ProtoReflect 

func (x *PartitionResponse) ProtoReflect() protoreflect.Message

func (*PartitionResponse) Reset 

func (x *PartitionResponse) Reset()

func (*PartitionResponse) String 

func (x *PartitionResponse) String() string

type PlanNode 

type PlanNode struct {

	// The `PlanNode`'s index in [node list][google.spanner.v1.QueryPlan.plan_nodes].
	Index int32 `protobuf:"varint,1,opt,name=index,proto3" json:"index,omitempty"`
	// Used to determine the type of node. May be needed for visualizing
	// different kinds of nodes differently. For example, If the node is a
	// [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] node, it will have a condensed representation
	// which can be used to directly embed a description of the node in its
	// parent.
	Kind PlanNode_Kind `protobuf:"varint,2,opt,name=kind,proto3,enum=google.spanner.v1.PlanNode_Kind" json:"kind,omitempty"`
	// The display name for the node.
	DisplayName string `protobuf:"bytes,3,opt,name=display_name,json=displayName,proto3" json:"display_name,omitempty"`
	// List of child node `index`es and their relationship to this parent.
	ChildLinks []*PlanNode_ChildLink `protobuf:"bytes,4,rep,name=child_links,json=childLinks,proto3" json:"child_links,omitempty"`
	// Condensed representation for [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] nodes.
	ShortRepresentation *PlanNode_ShortRepresentation `protobuf:"bytes,5,opt,name=short_representation,json=shortRepresentation,proto3" json:"short_representation,omitempty"`
	// Attributes relevant to the node contained in a group of key-value pairs.
	// For example, a Parameter Reference node could have the following
	// information in its metadata:
	//
	//     {
	//       "parameter_reference": "param1",
	//       "parameter_type": "array"
	//     }
	Metadata *structpb.Struct `protobuf:"bytes,6,opt,name=metadata,proto3" json:"metadata,omitempty"`
	// The execution statistics associated with the node, contained in a group of
	// key-value pairs. Only present if the plan was returned as a result of a
	// profile query. For example, number of executions, number of rows/time per
	// execution etc.
	ExecutionStats *structpb.Struct `protobuf:"bytes,7,opt,name=execution_stats,json=executionStats,proto3" json:"execution_stats,omitempty"`
	// contains filtered or unexported fields
}

Node information for nodes appearing in a [QueryPlan.plan_nodes][google.spanner.v1.QueryPlan.plan_nodes].

func (*PlanNode) Descriptor deprecated 

func (*PlanNode) Descriptor() ([]byte, []int)

Deprecated: Use PlanNode.ProtoReflect.Descriptor instead. 

func (x *PlanNode) GetChildLinks() []*PlanNode_ChildLink

func (*PlanNode) GetDisplayName 

func (x *PlanNode) GetDisplayName() string

func (*PlanNode) GetExecutionStats 

func (x *PlanNode) GetExecutionStats() *structpb.Struct

func (*PlanNode) GetIndex 

func (x *PlanNode) GetIndex() int32

func (*PlanNode) GetKind 

func (x *PlanNode) GetKind() PlanNode_Kind

func (*PlanNode) GetMetadata 

func (x *PlanNode) GetMetadata() *structpb.Struct

func (*PlanNode) GetShortRepresentation 

func (x *PlanNode) GetShortRepresentation() *PlanNode_ShortRepresentation

func (*PlanNode) ProtoMessage 

func (*PlanNode) ProtoMessage()

func (*PlanNode) ProtoReflect 

func (x *PlanNode) ProtoReflect() protoreflect.Message

func (*PlanNode) Reset 

func (x *PlanNode) Reset()

func (*PlanNode) String 

func (x *PlanNode) String() string
type PlanNode_ChildLink struct {

	// The node to which the link points.
	ChildIndex int32 `protobuf:"varint,1,opt,name=child_index,json=childIndex,proto3" json:"child_index,omitempty"`
	// The type of the link. For example, in Hash Joins this could be used to
	// distinguish between the build child and the probe child, or in the case
	// of the child being an output variable, to represent the tag associated
	// with the output variable.
	Type string `protobuf:"bytes,2,opt,name=type,proto3" json:"type,omitempty"`
	// Only present if the child node is [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] and corresponds
	// to an output variable of the parent node. The field carries the name of
	// the output variable.
	// For example, a `TableScan` operator that reads rows from a table will
	// have child links to the `SCALAR` nodes representing the output variables
	// created for each column that is read by the operator. The corresponding
	// `variable` fields will be set to the variable names assigned to the
	// columns.
	Variable string `protobuf:"bytes,3,opt,name=variable,proto3" json:"variable,omitempty"`
	// contains filtered or unexported fields
}

Metadata associated with a parent-child relationship appearing in a PlanNode[google.spanner.v1.PlanNode].

func (*PlanNode_ChildLink) Descriptor deprecated 

func (*PlanNode_ChildLink) Descriptor() ([]byte, []int)

Deprecated: Use PlanNode_ChildLink.ProtoReflect.Descriptor instead.

func (*PlanNode_ChildLink) GetChildIndex 

func (x *PlanNode_ChildLink) GetChildIndex() int32

func (*PlanNode_ChildLink) GetType 

func (x *PlanNode_ChildLink) GetType() string

func (*PlanNode_ChildLink) GetVariable 

func (x *PlanNode_ChildLink) GetVariable() string

func (*PlanNode_ChildLink) ProtoMessage 

func (*PlanNode_ChildLink) ProtoMessage()

func (*PlanNode_ChildLink) ProtoReflect 

func (x *PlanNode_ChildLink) ProtoReflect() protoreflect.Message

func (*PlanNode_ChildLink) Reset 

func (x *PlanNode_ChildLink) Reset()

func (*PlanNode_ChildLink) String 

func (x *PlanNode_ChildLink) String() string

type PlanNode_Kind 

type PlanNode_Kind int32

The kind of PlanNode[google.spanner.v1.PlanNode]. Distinguishes between the two different kinds of nodes that can appear in a query plan. 

const (
	// Not specified.
	PlanNode_KIND_UNSPECIFIED PlanNode_Kind = 0
	// Denotes a Relational operator node in the expression tree. Relational
	// operators represent iterative processing of rows during query execution.
	// For example, a `TableScan` operation that reads rows from a table.
	PlanNode_RELATIONAL PlanNode_Kind = 1
	// Denotes a Scalar node in the expression tree. Scalar nodes represent
	// non-iterable entities in the query plan. For example, constants or
	// arithmetic operators appearing inside predicate expressions or references
	// to column names.
	PlanNode_SCALAR PlanNode_Kind = 2
)

func (PlanNode_Kind) Descriptor 

func (PlanNode_Kind) Descriptor() protoreflect.EnumDescriptor

func (PlanNode_Kind) Enum 

func (x PlanNode_Kind) Enum() *PlanNode_Kind

func (PlanNode_Kind) EnumDescriptor deprecated 

func (PlanNode_Kind) EnumDescriptor() ([]byte, []int)

Deprecated: Use PlanNode_Kind.Descriptor instead.

func (PlanNode_Kind) Number 

func (x PlanNode_Kind) Number() protoreflect.EnumNumber

func (PlanNode_Kind) String 

func (x PlanNode_Kind) String() string

func (PlanNode_Kind) Type 

func (PlanNode_Kind) Type() protoreflect.EnumType

type PlanNode_ShortRepresentation 

type PlanNode_ShortRepresentation struct {

	// A string representation of the expression subtree rooted at this node.
	Description string `protobuf:"bytes,1,opt,name=description,proto3" json:"description,omitempty"`
	// A mapping of (subquery variable name) -> (subquery node id) for cases
	// where the `description` string of this node references a `SCALAR`
	// subquery contained in the expression subtree rooted at this node. The
	// referenced `SCALAR` subquery may not necessarily be a direct child of
	// this node.
	Subqueries map[string]int32 `` /* 162-byte string literal not displayed */
	// contains filtered or unexported fields
}

Condensed representation of a node and its subtree. Only present for `SCALAR` [PlanNode(s)][google.spanner.v1.PlanNode].

func (*PlanNode_ShortRepresentation) Descriptor deprecated 

func (*PlanNode_ShortRepresentation) Descriptor() ([]byte, []int)

Deprecated: Use PlanNode_ShortRepresentation.ProtoReflect.Descriptor instead.

func (*PlanNode_ShortRepresentation) GetDescription 

func (x *PlanNode_ShortRepresentation) GetDescription() string

func (*PlanNode_ShortRepresentation) GetSubqueries 

func (x *PlanNode_ShortRepresentation) GetSubqueries() map[string]int32

func (*PlanNode_ShortRepresentation) ProtoMessage 

func (*PlanNode_ShortRepresentation) ProtoMessage()

func (*PlanNode_ShortRepresentation) ProtoReflect 

func (x *PlanNode_ShortRepresentation) ProtoReflect() protoreflect.Message

func (*PlanNode_ShortRepresentation) Reset 

func (x *PlanNode_ShortRepresentation) Reset()

func (*PlanNode_ShortRepresentation) String 

func (x *PlanNode_ShortRepresentation) String() string

type QueryPlan 

type QueryPlan struct {

	// The nodes in the query plan. Plan nodes are returned in pre-order starting
	// with the plan root. Each [PlanNode][google.spanner.v1.PlanNode]'s `id` corresponds to its index in
	// `plan_nodes`.
	PlanNodes []*PlanNode `protobuf:"bytes,1,rep,name=plan_nodes,json=planNodes,proto3" json:"plan_nodes,omitempty"`
	// contains filtered or unexported fields
}

Contains an ordered list of nodes appearing in the query plan.

func (*QueryPlan) Descriptor deprecated 

func (*QueryPlan) Descriptor() ([]byte, []int)

Deprecated: Use QueryPlan.ProtoReflect.Descriptor instead.

func (*QueryPlan) GetPlanNodes 

func (x *QueryPlan) GetPlanNodes() []*PlanNode

func (*QueryPlan) ProtoMessage 

func (*QueryPlan) ProtoMessage()

func (*QueryPlan) ProtoReflect 

func (x *QueryPlan) ProtoReflect() protoreflect.Message

func (*QueryPlan) Reset 

func (x *QueryPlan) Reset()

func (*QueryPlan) String 

func (x *QueryPlan) String() string

type ReadRequest 

type ReadRequest struct {

	// Required. The session in which the read should be performed.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// The transaction to use. If none is provided, the default is a
	// temporary read-only transaction with strong concurrency.
	Transaction *TransactionSelector `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// Required. The name of the table in the database to be read.
	Table string `protobuf:"bytes,3,opt,name=table,proto3" json:"table,omitempty"`
	// If non-empty, the name of an index on [table][google.spanner.v1.ReadRequest.table]. This index is
	// used instead of the table primary key when interpreting [key_set][google.spanner.v1.ReadRequest.key_set]
	// and sorting result rows. See [key_set][google.spanner.v1.ReadRequest.key_set] for further information.
	Index string `protobuf:"bytes,4,opt,name=index,proto3" json:"index,omitempty"`
	// Required. The columns of [table][google.spanner.v1.ReadRequest.table] to be returned for each row matching
	// this request.
	Columns []string `protobuf:"bytes,5,rep,name=columns,proto3" json:"columns,omitempty"`
	// Required. `key_set` identifies the rows to be yielded. `key_set` names the
	// primary keys of the rows in [table][google.spanner.v1.ReadRequest.table] to be yielded, unless [index][google.spanner.v1.ReadRequest.index]
	// is present. If [index][google.spanner.v1.ReadRequest.index] is present, then [key_set][google.spanner.v1.ReadRequest.key_set] instead names
	// index keys in [index][google.spanner.v1.ReadRequest.index].
	//
	// If the [partition_token][google.spanner.v1.ReadRequest.partition_token] field is empty, rows are yielded
	// in table primary key order (if [index][google.spanner.v1.ReadRequest.index] is empty) or index key order
	// (if [index][google.spanner.v1.ReadRequest.index] is non-empty).  If the [partition_token][google.spanner.v1.ReadRequest.partition_token] field is not
	// empty, rows will be yielded in an unspecified order.
	//
	// It is not an error for the `key_set` to name rows that do not
	// exist in the database. Read yields nothing for nonexistent rows.
	KeySet *KeySet `protobuf:"bytes,6,opt,name=key_set,json=keySet,proto3" json:"key_set,omitempty"`
	// If greater than zero, only the first `limit` rows are yielded. If `limit`
	// is zero, the default is no limit. A limit cannot be specified if
	// `partition_token` is set.
	Limit int64 `protobuf:"varint,8,opt,name=limit,proto3" json:"limit,omitempty"`
	// If this request is resuming a previously interrupted read,
	// `resume_token` should be copied from the last
	// [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the interruption. Doing this
	// enables the new read to resume where the last read left off. The
	// rest of the request parameters must exactly match the request
	// that yielded this token.
	ResumeToken []byte `protobuf:"bytes,9,opt,name=resume_token,json=resumeToken,proto3" json:"resume_token,omitempty"`
	// If present, results will be restricted to the specified partition
	// previously created using PartitionRead().    There must be an exact
	// match for the values of fields common to this message and the
	// PartitionReadRequest message used to create this partition_token.
	PartitionToken []byte `protobuf:"bytes,10,opt,name=partition_token,json=partitionToken,proto3" json:"partition_token,omitempty"`
	// contains filtered or unexported fields
}

The request for [Read][google.spanner.v1.Spanner.Read] and [StreamingRead][google.spanner.v1.Spanner.StreamingRead].

func (*ReadRequest) Descriptor deprecated 

func (*ReadRequest) Descriptor() ([]byte, []int)

Deprecated: Use ReadRequest.ProtoReflect.Descriptor instead.

func (*ReadRequest) GetColumns 

func (x *ReadRequest) GetColumns() []string

func (*ReadRequest) GetIndex 

func (x *ReadRequest) GetIndex() string

func (*ReadRequest) GetKeySet 

func (x *ReadRequest) GetKeySet() *KeySet

func (*ReadRequest) GetLimit 

func (x *ReadRequest) GetLimit() int64

func (*ReadRequest) GetPartitionToken 

func (x *ReadRequest) GetPartitionToken() []byte

func (*ReadRequest) GetResumeToken 

func (x *ReadRequest) GetResumeToken() []byte

func (*ReadRequest) GetSession 

func (x *ReadRequest) GetSession() string

func (*ReadRequest) GetTable 

func (x *ReadRequest) GetTable() string

func (*ReadRequest) GetTransaction 

func (x *ReadRequest) GetTransaction() *TransactionSelector

func (*ReadRequest) ProtoMessage 

func (*ReadRequest) ProtoMessage()

func (*ReadRequest) ProtoReflect 

func (x *ReadRequest) ProtoReflect() protoreflect.Message

func (*ReadRequest) Reset 

func (x *ReadRequest) Reset()

func (*ReadRequest) String 

func (x *ReadRequest) String() string

type ResultSet 

type ResultSet struct {

	// Metadata about the result set, such as row type information.
	Metadata *ResultSetMetadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
	// Each element in `rows` is a row whose format is defined by
	// [metadata.row_type][google.spanner.v1.ResultSetMetadata.row_type]. The ith element
	// in each row matches the ith field in
	// [metadata.row_type][google.spanner.v1.ResultSetMetadata.row_type]. Elements are
	// encoded based on type as described
	// [here][google.spanner.v1.TypeCode].
	Rows []*structpb.ListValue `protobuf:"bytes,2,rep,name=rows,proto3" json:"rows,omitempty"`
	// Query plan and execution statistics for the SQL statement that
	// produced this result set. These can be requested by setting
	// [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode].
	// DML statements always produce stats containing the number of rows
	// modified, unless executed using the
	// [ExecuteSqlRequest.QueryMode.PLAN][google.spanner.v1.ExecuteSqlRequest.QueryMode.PLAN] [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode].
	// Other fields may or may not be populated, based on the
	// [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode].
	Stats *ResultSetStats `protobuf:"bytes,3,opt,name=stats,proto3" json:"stats,omitempty"`
	// contains filtered or unexported fields
}

Results from [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].

func (*ResultSet) Descriptor deprecated 

func (*ResultSet) Descriptor() ([]byte, []int)

Deprecated: Use ResultSet.ProtoReflect.Descriptor instead.

func (*ResultSet) GetMetadata 

func (x *ResultSet) GetMetadata() *ResultSetMetadata

func (*ResultSet) GetRows 

func (x *ResultSet) GetRows() []*structpb.ListValue

func (*ResultSet) GetStats 

func (x *ResultSet) GetStats() *ResultSetStats

func (*ResultSet) ProtoMessage 

func (*ResultSet) ProtoMessage()

func (*ResultSet) ProtoReflect 

func (x *ResultSet) ProtoReflect() protoreflect.Message

func (*ResultSet) Reset 

func (x *ResultSet) Reset()

func (*ResultSet) String 

func (x *ResultSet) String() string

type ResultSetMetadata 

type ResultSetMetadata struct {

	// Indicates the field names and types for the rows in the result
	// set.  For example, a SQL query like `"SELECT UserId, UserName FROM
	// Users"` could return a `row_type` value like:
	//
	//     "fields": [
	//       { "name": "UserId", "type": { "code": "INT64" } },
	//       { "name": "UserName", "type": { "code": "STRING" } },
	//     ]
	RowType *StructType `protobuf:"bytes,1,opt,name=row_type,json=rowType,proto3" json:"row_type,omitempty"`
	// If the read or SQL query began a transaction as a side-effect, the
	// information about the new transaction is yielded here.
	Transaction *Transaction `protobuf:"bytes,2,opt,name=transaction,proto3" json:"transaction,omitempty"`
	// contains filtered or unexported fields
}

Metadata about a ResultSet[google.spanner.v1.ResultSet] or PartialResultSet[google.spanner.v1.PartialResultSet].

func (*ResultSetMetadata) Descriptor deprecated 

func (*ResultSetMetadata) Descriptor() ([]byte, []int)

Deprecated: Use ResultSetMetadata.ProtoReflect.Descriptor instead.

func (*ResultSetMetadata) GetRowType 

func (x *ResultSetMetadata) GetRowType() *StructType

func (*ResultSetMetadata) GetTransaction 

func (x *ResultSetMetadata) GetTransaction() *Transaction

func (*ResultSetMetadata) ProtoMessage 

func (*ResultSetMetadata) ProtoMessage()

func (*ResultSetMetadata) ProtoReflect 

func (x *ResultSetMetadata) ProtoReflect() protoreflect.Message

func (*ResultSetMetadata) Reset 

func (x *ResultSetMetadata) Reset()

func (*ResultSetMetadata) String 

func (x *ResultSetMetadata) String() string

type ResultSetStats 

type ResultSetStats struct {

	// [QueryPlan][google.spanner.v1.QueryPlan] for the query associated with this result.
	QueryPlan *QueryPlan `protobuf:"bytes,1,opt,name=query_plan,json=queryPlan,proto3" json:"query_plan,omitempty"`
	// Aggregated statistics from the execution of the query. Only present when
	// the query is profiled. For example, a query could return the statistics as
	// follows:
	//
	//     {
	//       "rows_returned": "3",
	//       "elapsed_time": "1.22 secs",
	//       "cpu_time": "1.19 secs"
	//     }
	QueryStats *structpb.Struct `protobuf:"bytes,2,opt,name=query_stats,json=queryStats,proto3" json:"query_stats,omitempty"`
	// The number of rows modified by the DML statement.
	//
	// Types that are assignable to RowCount:
	//	*ResultSetStats_RowCountExact
	//	*ResultSetStats_RowCountLowerBound
	RowCount isResultSetStats_RowCount `protobuf_oneof:"row_count"`
	// contains filtered or unexported fields
}

Additional statistics about a ResultSet[google.spanner.v1.ResultSet] or PartialResultSet[google.spanner.v1.PartialResultSet].

func (*ResultSetStats) Descriptor deprecated 

func (*ResultSetStats) Descriptor() ([]byte, []int)

Deprecated: Use ResultSetStats.ProtoReflect.Descriptor instead.

func (*ResultSetStats) GetQueryPlan 

func (x *ResultSetStats) GetQueryPlan() *QueryPlan

func (*ResultSetStats) GetQueryStats 

func (x *ResultSetStats) GetQueryStats() *structpb.Struct

func (*ResultSetStats) GetRowCount 

func (m *ResultSetStats) GetRowCount() isResultSetStats_RowCount

func (*ResultSetStats) GetRowCountExact 

func (x *ResultSetStats) GetRowCountExact() int64

func (*ResultSetStats) GetRowCountLowerBound 

func (x *ResultSetStats) GetRowCountLowerBound() int64

func (*ResultSetStats) ProtoMessage 

func (*ResultSetStats) ProtoMessage()

func (*ResultSetStats) ProtoReflect 

func (x *ResultSetStats) ProtoReflect() protoreflect.Message

func (*ResultSetStats) Reset 

func (x *ResultSetStats) Reset()

func (*ResultSetStats) String 

func (x *ResultSetStats) String() string

type ResultSetStats_RowCountExact 

type ResultSetStats_RowCountExact struct {
	// Standard DML returns an exact count of rows that were modified.
	RowCountExact int64 `protobuf:"varint,3,opt,name=row_count_exact,json=rowCountExact,proto3,oneof"`
}

type ResultSetStats_RowCountLowerBound 

type ResultSetStats_RowCountLowerBound struct {
	// Partitioned DML does not offer exactly-once semantics, so it
	// returns a lower bound of the rows modified.
	RowCountLowerBound int64 `protobuf:"varint,4,opt,name=row_count_lower_bound,json=rowCountLowerBound,proto3,oneof"`
}

type RollbackRequest 

type RollbackRequest struct {

	// Required. The session in which the transaction to roll back is running.
	Session string `protobuf:"bytes,1,opt,name=session,proto3" json:"session,omitempty"`
	// Required. The transaction to roll back.
	TransactionId []byte `protobuf:"bytes,2,opt,name=transaction_id,json=transactionId,proto3" json:"transaction_id,omitempty"`
	// contains filtered or unexported fields
}

The request for [Rollback][google.spanner.v1.Spanner.Rollback].

func (*RollbackRequest) Descriptor deprecated 

func (*RollbackRequest) Descriptor() ([]byte, []int)

Deprecated: Use RollbackRequest.ProtoReflect.Descriptor instead.

func (*RollbackRequest) GetSession 

func (x *RollbackRequest) GetSession() string

func (*RollbackRequest) GetTransactionId 

func (x *RollbackRequest) GetTransactionId() []byte

func (*RollbackRequest) ProtoMessage 

func (*RollbackRequest) ProtoMessage()

func (*RollbackRequest) ProtoReflect 

func (x *RollbackRequest) ProtoReflect() protoreflect.Message

func (*RollbackRequest) Reset 

func (x *RollbackRequest) Reset()

func (*RollbackRequest) String 

func (x *RollbackRequest) String() string

type Session 

type Session struct {

	// The name of the session. This is always system-assigned; values provided
	// when creating a session are ignored.
	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	// The labels for the session.
	//
	//  * Label keys must be between 1 and 63 characters long and must conform to
	//    the following regular expression: `[a-z]([-a-z0-9]*[a-z0-9])?`.
	//  * Label values must be between 0 and 63 characters long and must conform
	//    to the regular expression `([a-z]([-a-z0-9]*[a-z0-9])?)?`.
	//  * No more than 64 labels can be associated with a given session.
	//
	// See https://goo.gl/xmQnxf for more information on and examples of labels.
	Labels map[string]string `` /* 153-byte string literal not displayed */
	// Output only. The timestamp when the session is created.
	CreateTime *timestamppb.Timestamp `protobuf:"bytes,3,opt,name=create_time,json=createTime,proto3" json:"create_time,omitempty"`
	// Output only. The approximate timestamp when the session is last used. It is
	// typically earlier than the actual last use time.
	ApproximateLastUseTime *timestamppb.Timestamp `` /* 131-byte string literal not displayed */
	// contains filtered or unexported fields
}

A session in the Cloud Spanner API.

func (*Session) Descriptor deprecated 

func (*Session) Descriptor() ([]byte, []int)

Deprecated: Use Session.ProtoReflect.Descriptor instead.

func (*Session) GetApproximateLastUseTime 

func (x *Session) GetApproximateLastUseTime() *timestamppb.Timestamp

func (*Session) GetCreateTime 

func (x *Session) GetCreateTime() *timestamppb.Timestamp

func (*Session) GetLabels 

func (x *Session) GetLabels() map[string]string

func (*Session) GetName 

func (x *Session) GetName() string

func (*Session) ProtoMessage 

func (*Session) ProtoMessage()

func (*Session) ProtoReflect 

func (x *Session) ProtoReflect() protoreflect.Message

func (*Session) Reset 

func (x *Session) Reset()

func (*Session) String 

func (x *Session) String() string

type SpannerClient 

type SpannerClient interface {
	// Creates a new session. A session can be used to perform
	// transactions that read and/or modify data in a Cloud Spanner database.
	// Sessions are meant to be reused for many consecutive
	// transactions.
	//
	// Sessions can only execute one transaction at a time. To execute
	// multiple concurrent read-write/write-only transactions, create
	// multiple sessions. Note that standalone reads and queries use a
	// transaction internally, and count toward the one transaction
	// limit.
	//
	// Active sessions use additional server resources, so it is a good idea to
	// delete idle and unneeded sessions.
	// Aside from explicit deletes, Cloud Spanner may delete sessions for which no
	// operations are sent for more than an hour. If a session is deleted,
	// requests to it return `NOT_FOUND`.
	//
	// Idle sessions can be kept alive by sending a trivial SQL query
	// periodically, e.g., `"SELECT 1"`.
	CreateSession(ctx context.Context, in *CreateSessionRequest, opts ...grpc.CallOption) (*Session, error)
	// Creates multiple new sessions.
	//
	// This API can be used to initialize a session cache on the clients.
	// See https://goo.gl/TgSFN2 for best practices on session cache management.
	BatchCreateSessions(ctx context.Context, in *BatchCreateSessionsRequest, opts ...grpc.CallOption) (*BatchCreateSessionsResponse, error)
	// Gets a session. Returns `NOT_FOUND` if the session does not exist.
	// This is mainly useful for determining whether a session is still
	// alive.
	GetSession(ctx context.Context, in *GetSessionRequest, opts ...grpc.CallOption) (*Session, error)
	// Lists all sessions in a given database.
	ListSessions(ctx context.Context, in *ListSessionsRequest, opts ...grpc.CallOption) (*ListSessionsResponse, error)
	// Ends a session, releasing server resources associated with it. This will
	// asynchronously trigger cancellation of any operations that are running with
	// this session.
	DeleteSession(ctx context.Context, in *DeleteSessionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
	// Executes an SQL statement, returning all results in a single reply. This
	// method cannot be used to return a result set larger than 10 MiB;
	// if the query yields more data than that, the query fails with
	// a `FAILED_PRECONDITION` error.
	//
	// Operations inside read-write transactions might return `ABORTED`. If
	// this occurs, the application should restart the transaction from
	// the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
	//
	// Larger result sets can be fetched in streaming fashion by calling
	// [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.
	ExecuteSql(ctx context.Context, in *ExecuteSqlRequest, opts ...grpc.CallOption) (*ResultSet, error)
	// Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result
	// set as a stream. Unlike [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there
	// is no limit on the size of the returned result set. However, no
	// individual row in the result set can exceed 100 MiB, and no
	// column value can exceed 10 MiB.
	ExecuteStreamingSql(ctx context.Context, in *ExecuteSqlRequest, opts ...grpc.CallOption) (Spanner_ExecuteStreamingSqlClient, error)
	// Executes a batch of SQL DML statements. This method allows many statements
	// to be run with lower latency than submitting them sequentially with
	// [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
	//
	// Statements are executed in sequential order. A request can succeed even if
	// a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the
	// response provides information about the statement that failed. Clients must
	// inspect this field to determine whether an error occurred.
	//
	// Execution stops after the first failed statement; the remaining statements
	// are not executed.
	ExecuteBatchDml(ctx context.Context, in *ExecuteBatchDmlRequest, opts ...grpc.CallOption) (*ExecuteBatchDmlResponse, error)
	// Reads rows from the database using key lookups and scans, as a
	// simple key/value style alternative to
	// [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].  This method cannot be used to
	// return a result set larger than 10 MiB; if the read matches more
	// data than that, the read fails with a `FAILED_PRECONDITION`
	// error.
	//
	// Reads inside read-write transactions might return `ABORTED`. If
	// this occurs, the application should restart the transaction from
	// the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
	//
	// Larger result sets can be yielded in streaming fashion by calling
	// [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.
	Read(ctx context.Context, in *ReadRequest, opts ...grpc.CallOption) (*ResultSet, error)
	// Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a
	// stream. Unlike [Read][google.spanner.v1.Spanner.Read], there is no limit on the
	// size of the returned result set. However, no individual row in
	// the result set can exceed 100 MiB, and no column value can exceed
	// 10 MiB.
	StreamingRead(ctx context.Context, in *ReadRequest, opts ...grpc.CallOption) (Spanner_StreamingReadClient, error)
	// Begins a new transaction. This step can often be skipped:
	// [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
	// [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a
	// side-effect.
	BeginTransaction(ctx context.Context, in *BeginTransactionRequest, opts ...grpc.CallOption) (*Transaction, error)
	// Commits a transaction. The request includes the mutations to be
	// applied to rows in the database.
	//
	// `Commit` might return an `ABORTED` error. This can occur at any time;
	// commonly, the cause is conflicts with concurrent
	// transactions. However, it can also happen for a variety of other
	// reasons. If `Commit` returns `ABORTED`, the caller should re-attempt
	// the transaction from the beginning, re-using the same session.
	Commit(ctx context.Context, in *CommitRequest, opts ...grpc.CallOption) (*CommitResponse, error)
	// Rolls back a transaction, releasing any locks it holds. It is a good
	// idea to call this for any transaction that includes one or more
	// [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
	// ultimately decides not to commit.
	//
	// `Rollback` returns `OK` if it successfully aborts the transaction, the
	// transaction was already aborted, or the transaction is not
	// found. `Rollback` never returns `ABORTED`.
	Rollback(ctx context.Context, in *RollbackRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
	// Creates a set of partition tokens that can be used to execute a query
	// operation in parallel.  Each of the returned partition tokens can be used
	// by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset
	// of the query result to read.  The same session and read-only transaction
	// must be used by the PartitionQueryRequest used to create the
	// partition tokens and the ExecuteSqlRequests that use the partition tokens.
	//
	// Partition tokens become invalid when the session used to create them
	// is deleted, is idle for too long, begins a new transaction, or becomes too
	// old.  When any of these happen, it is not possible to resume the query, and
	// the whole operation must be restarted from the beginning.
	PartitionQuery(ctx context.Context, in *PartitionQueryRequest, opts ...grpc.CallOption) (*PartitionResponse, error)
	// Creates a set of partition tokens that can be used to execute a read
	// operation in parallel.  Each of the returned partition tokens can be used
	// by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read
	// result to read.  The same session and read-only transaction must be used by
	// the PartitionReadRequest used to create the partition tokens and the
	// ReadRequests that use the partition tokens.  There are no ordering
	// guarantees on rows returned among the returned partition tokens, or even
	// within each individual StreamingRead call issued with a partition_token.
	//
	// Partition tokens become invalid when the session used to create them
	// is deleted, is idle for too long, begins a new transaction, or becomes too
	// old.  When any of these happen, it is not possible to resume the read, and
	// the whole operation must be restarted from the beginning.
	PartitionRead(ctx context.Context, in *PartitionReadRequest, opts ...grpc.CallOption) (*PartitionResponse, error)
}

SpannerClient is the client API for Spanner service.

For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.

func NewSpannerClient 

func NewSpannerClient(cc grpc.ClientConnInterface) SpannerClient

type SpannerServer 

type SpannerServer interface {
	// Creates a new session. A session can be used to perform
	// transactions that read and/or modify data in a Cloud Spanner database.
	// Sessions are meant to be reused for many consecutive
	// transactions.
	//
	// Sessions can only execute one transaction at a time. To execute
	// multiple concurrent read-write/write-only transactions, create
	// multiple sessions. Note that standalone reads and queries use a
	// transaction internally, and count toward the one transaction
	// limit.
	//
	// Active sessions use additional server resources, so it is a good idea to
	// delete idle and unneeded sessions.
	// Aside from explicit deletes, Cloud Spanner may delete sessions for which no
	// operations are sent for more than an hour. If a session is deleted,
	// requests to it return `NOT_FOUND`.
	//
	// Idle sessions can be kept alive by sending a trivial SQL query
	// periodically, e.g., `"SELECT 1"`.
	CreateSession(context.Context, *CreateSessionRequest) (*Session, error)
	// Creates multiple new sessions.
	//
	// This API can be used to initialize a session cache on the clients.
	// See https://goo.gl/TgSFN2 for best practices on session cache management.
	BatchCreateSessions(context.Context, *BatchCreateSessionsRequest) (*BatchCreateSessionsResponse, error)
	// Gets a session. Returns `NOT_FOUND` if the session does not exist.
	// This is mainly useful for determining whether a session is still
	// alive.
	GetSession(context.Context, *GetSessionRequest) (*Session, error)
	// Lists all sessions in a given database.
	ListSessions(context.Context, *ListSessionsRequest) (*ListSessionsResponse, error)
	// Ends a session, releasing server resources associated with it. This will
	// asynchronously trigger cancellation of any operations that are running with
	// this session.
	DeleteSession(context.Context, *DeleteSessionRequest) (*emptypb.Empty, error)
	// Executes an SQL statement, returning all results in a single reply. This
	// method cannot be used to return a result set larger than 10 MiB;
	// if the query yields more data than that, the query fails with
	// a `FAILED_PRECONDITION` error.
	//
	// Operations inside read-write transactions might return `ABORTED`. If
	// this occurs, the application should restart the transaction from
	// the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
	//
	// Larger result sets can be fetched in streaming fashion by calling
	// [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.
	ExecuteSql(context.Context, *ExecuteSqlRequest) (*ResultSet, error)
	// Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result
	// set as a stream. Unlike [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there
	// is no limit on the size of the returned result set. However, no
	// individual row in the result set can exceed 100 MiB, and no
	// column value can exceed 10 MiB.
	ExecuteStreamingSql(*ExecuteSqlRequest, Spanner_ExecuteStreamingSqlServer) error
	// Executes a batch of SQL DML statements. This method allows many statements
	// to be run with lower latency than submitting them sequentially with
	// [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
	//
	// Statements are executed in sequential order. A request can succeed even if
	// a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the
	// response provides information about the statement that failed. Clients must
	// inspect this field to determine whether an error occurred.
	//
	// Execution stops after the first failed statement; the remaining statements
	// are not executed.
	ExecuteBatchDml(context.Context, *ExecuteBatchDmlRequest) (*ExecuteBatchDmlResponse, error)
	// Reads rows from the database using key lookups and scans, as a
	// simple key/value style alternative to
	// [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].  This method cannot be used to
	// return a result set larger than 10 MiB; if the read matches more
	// data than that, the read fails with a `FAILED_PRECONDITION`
	// error.
	//
	// Reads inside read-write transactions might return `ABORTED`. If
	// this occurs, the application should restart the transaction from
	// the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
	//
	// Larger result sets can be yielded in streaming fashion by calling
	// [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.
	Read(context.Context, *ReadRequest) (*ResultSet, error)
	// Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a
	// stream. Unlike [Read][google.spanner.v1.Spanner.Read], there is no limit on the
	// size of the returned result set. However, no individual row in
	// the result set can exceed 100 MiB, and no column value can exceed
	// 10 MiB.
	StreamingRead(*ReadRequest, Spanner_StreamingReadServer) error
	// Begins a new transaction. This step can often be skipped:
	// [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
	// [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a
	// side-effect.
	BeginTransaction(context.Context, *BeginTransactionRequest) (*Transaction, error)
	// Commits a transaction. The request includes the mutations to be
	// applied to rows in the database.
	//
	// `Commit` might return an `ABORTED` error. This can occur at any time;
	// commonly, the cause is conflicts with concurrent
	// transactions. However, it can also happen for a variety of other
	// reasons. If `Commit` returns `ABORTED`, the caller should re-attempt
	// the transaction from the beginning, re-using the same session.
	Commit(context.Context, *CommitRequest) (*CommitResponse, error)
	// Rolls back a transaction, releasing any locks it holds. It is a good
	// idea to call this for any transaction that includes one or more
	// [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
	// ultimately decides not to commit.
	//
	// `Rollback` returns `OK` if it successfully aborts the transaction, the
	// transaction was already aborted, or the transaction is not
	// found. `Rollback` never returns `ABORTED`.
	Rollback(context.Context, *RollbackRequest) (*emptypb.Empty, error)
	// Creates a set of partition tokens that can be used to execute a query
	// operation in parallel.  Each of the returned partition tokens can be used
	// by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset
	// of the query result to read.  The same session and read-only transaction
	// must be used by the PartitionQueryRequest used to create the
	// partition tokens and the ExecuteSqlRequests that use the partition tokens.
	//
	// Partition tokens become invalid when the session used to create them
	// is deleted, is idle for too long, begins a new transaction, or becomes too
	// old.  When any of these happen, it is not possible to resume the query, and
	// the whole operation must be restarted from the beginning.
	PartitionQuery(context.Context, *PartitionQueryRequest) (*PartitionResponse, error)
	// Creates a set of partition tokens that can be used to execute a read
	// operation in parallel.  Each of the returned partition tokens can be used
	// by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read
	// result to read.  The same session and read-only transaction must be used by
	// the PartitionReadRequest used to create the partition tokens and the
	// ReadRequests that use the partition tokens.  There are no ordering
	// guarantees on rows returned among the returned partition tokens, or even
	// within each individual StreamingRead call issued with a partition_token.
	//
	// Partition tokens become invalid when the session used to create them
	// is deleted, is idle for too long, begins a new transaction, or becomes too
	// old.  When any of these happen, it is not possible to resume the read, and
	// the whole operation must be restarted from the beginning.
	PartitionRead(context.Context, *PartitionReadRequest) (*PartitionResponse, error)
}

SpannerServer is the server API for Spanner service.

type Spanner_ExecuteStreamingSqlClient 

type Spanner_ExecuteStreamingSqlClient interface {
	Recv() (*PartialResultSet, error)
	grpc.ClientStream
}

type Spanner_ExecuteStreamingSqlServer 

type Spanner_ExecuteStreamingSqlServer interface {
	Send(*PartialResultSet) error
	grpc.ServerStream
}

type Spanner_StreamingReadClient 

type Spanner_StreamingReadClient interface {
	Recv() (*PartialResultSet, error)
	grpc.ClientStream
}

type Spanner_StreamingReadServer 

type Spanner_StreamingReadServer interface {
	Send(*PartialResultSet) error
	grpc.ServerStream
}

type StructType 

type StructType struct {

	// The list of fields that make up this struct. Order is
	// significant, because values of this struct type are represented as
	// lists, where the order of field values matches the order of
	// fields in the [StructType][google.spanner.v1.StructType]. In turn, the order of fields
	// matches the order of columns in a read request, or the order of
	// fields in the `SELECT` clause of a query.
	Fields []*StructType_Field `protobuf:"bytes,1,rep,name=fields,proto3" json:"fields,omitempty"`
	// contains filtered or unexported fields
}

`StructType` defines the fields of a [STRUCT][google.spanner.v1.TypeCode.STRUCT] type.

func (*StructType) Descriptor deprecated 

func (*StructType) Descriptor() ([]byte, []int)

Deprecated: Use StructType.ProtoReflect.Descriptor instead.

func (*StructType) GetFields 

func (x *StructType) GetFields() []*StructType_Field

func (*StructType) ProtoMessage 

func (*StructType) ProtoMessage()

func (*StructType) ProtoReflect 

func (x *StructType) ProtoReflect() protoreflect.Message

func (*StructType) Reset 

func (x *StructType) Reset()

func (*StructType) String 

func (x *StructType) String() string

type StructType_Field 

type StructType_Field struct {

	// The name of the field. For reads, this is the column name. For
	// SQL queries, it is the column alias (e.g., `"Word"` in the
	// query `"SELECT 'hello' AS Word"`), or the column name (e.g.,
	// `"ColName"` in the query `"SELECT ColName FROM Table"`). Some
	// columns might have an empty name (e.g., !"SELECT
	// UPPER(ColName)"`). Note that a query result can contain
	// multiple fields with the same name.
	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	// The type of the field.
	Type *Type `protobuf:"bytes,2,opt,name=type,proto3" json:"type,omitempty"`
	// contains filtered or unexported fields
}

Message representing a single field of a struct.

func (*StructType_Field) Descriptor deprecated 

func (*StructType_Field) Descriptor() ([]byte, []int)

Deprecated: Use StructType_Field.ProtoReflect.Descriptor instead.

func (*StructType_Field) GetName 

func (x *StructType_Field) GetName() string

func (*StructType_Field) GetType 

func (x *StructType_Field) GetType() *Type

func (*StructType_Field) ProtoMessage 

func (*StructType_Field) ProtoMessage()

func (*StructType_Field) ProtoReflect 

func (x *StructType_Field) ProtoReflect() protoreflect.Message

func (*StructType_Field) Reset 

func (x *StructType_Field) Reset()

func (*StructType_Field) String 

func (x *StructType_Field) String() string

type Transaction 

type Transaction struct {

	// `id` may be used to identify the transaction in subsequent
	// [Read][google.spanner.v1.Spanner.Read],
	// [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql],
	// [Commit][google.spanner.v1.Spanner.Commit], or
	// [Rollback][google.spanner.v1.Spanner.Rollback] calls.
	//
	// Single-use read-only transactions do not have IDs, because
	// single-use transactions do not support multiple requests.
	Id []byte `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
	// For snapshot read-only transactions, the read timestamp chosen
	// for the transaction. Not returned by default: see
	// [TransactionOptions.ReadOnly.return_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.return_read_timestamp].
	//
	// A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds.
	// Example: `"2014-10-02T15:01:23.045123456Z"`.
	ReadTimestamp *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=read_timestamp,json=readTimestamp,proto3" json:"read_timestamp,omitempty"`
	// contains filtered or unexported fields
}

A transaction.

func (*Transaction) Descriptor deprecated 

func (*Transaction) Descriptor() ([]byte, []int)

Deprecated: Use Transaction.ProtoReflect.Descriptor instead.

func (*Transaction) GetId 

func (x *Transaction) GetId() []byte

func (*Transaction) GetReadTimestamp 

func (x *Transaction) GetReadTimestamp() *timestamppb.Timestamp

func (*Transaction) ProtoMessage 

func (*Transaction) ProtoMessage()

func (*Transaction) ProtoReflect 

func (x *Transaction) ProtoReflect() protoreflect.Message

func (*Transaction) Reset 

func (x *Transaction) Reset()

func (*Transaction) String 

func (x *Transaction) String() string

type TransactionOptions 

type TransactionOptions struct {

	// Required. The type of transaction.
	//
	// Types that are assignable to Mode:
	//	*TransactionOptions_ReadWrite_
	//	*TransactionOptions_PartitionedDml_
	//	*TransactionOptions_ReadOnly_
	Mode isTransactionOptions_Mode `protobuf_oneof:"mode"`
	// contains filtered or unexported fields
}

Transactions

Each session can have at most one active transaction at a time. After the active transaction is completed, the session can immediately be re-used for the next transaction. It is not necessary to create a new session for each transaction.

Transaction Modes

Cloud Spanner supports three transaction modes:

  1. Locking read-write. This type of transaction is the only way to write data into Cloud Spanner. These transactions rely on pessimistic locking and, if necessary, two-phase commit. Locking read-write transactions may abort, requiring the application to retry.

  2. Snapshot read-only. This transaction type provides guaranteed consistency across several reads, but does not allow writes. Snapshot read-only transactions can be configured to read at timestamps in the past. Snapshot read-only transactions do not need to be committed.

  3. Partitioned DML. This type of transaction is used to execute a single Partitioned DML statement. Partitioned DML partitions the key space and runs the DML statement over each partition in parallel using separate, internal transactions that commit independently. Partitioned DML transactions do not need to be committed.

For transactions that only read, snapshot read-only transactions provide simpler semantics and are almost always faster. In particular, read-only transactions do not take locks, so they do not conflict with read-write transactions. As a consequence of not taking locks, they also do not abort, so retry loops are not needed.

Transactions may only read/write data in a single database. They may, however, read/write data in different tables within that database.

## Locking Read-Write Transactions

Locking transactions may be used to atomically read-modify-write data anywhere in a database. This type of transaction is externally consistent.

Clients should attempt to minimize the amount of time a transaction is active. Faster transactions commit with higher probability and cause less contention. Cloud Spanner attempts to keep read locks active as long as the transaction continues to do reads, and the transaction has not been terminated by [Commit][google.spanner.v1.Spanner.Commit] or [Rollback][google.spanner.v1.Spanner.Rollback]. Long periods of inactivity at the client may cause Cloud Spanner to release a transaction's locks and abort it.

Conceptually, a read-write transaction consists of zero or more reads or SQL statements followed by [Commit][google.spanner.v1.Spanner.Commit]. At any time before [Commit][google.spanner.v1.Spanner.Commit], the client can send a [Rollback][google.spanner.v1.Spanner.Rollback] request to abort the transaction.

### Semantics

Cloud Spanner can commit the transaction if all read locks it acquired are still valid at commit time, and it is able to acquire write locks for all writes. Cloud Spanner can abort the transaction for any reason. If a commit attempt returns `ABORTED`, Cloud Spanner guarantees that the transaction has not modified any user data in Cloud Spanner.

Unless the transaction commits, Cloud Spanner makes no guarantees about how long the transaction's locks were held for. It is an error to use Cloud Spanner locks for any sort of mutual exclusion other than between Cloud Spanner transactions themselves.

### Retrying Aborted Transactions

When a transaction aborts, the application can choose to retry the whole transaction again. To maximize the chances of successfully committing the retry, the client should execute the retry in the same session as the original attempt. The original session's lock priority increases with each consecutive abort, meaning that each attempt has a slightly better chance of success than the previous.

Under some circumstances (e.g., many transactions attempting to modify the same row(s)), a transaction can abort many times in a short period before successfully committing. Thus, it is not a good idea to cap the number of retries a transaction can attempt; instead, it is better to limit the total amount of wall time spent retrying.

### Idle Transactions

A transaction is considered idle if it has no outstanding reads or SQL queries and has not started a read or SQL query within the last 10 seconds. Idle transactions can be aborted by Cloud Spanner so that they don't hold on to locks indefinitely. In that case, the commit will fail with error `ABORTED`.

If this behavior is undesirable, periodically executing a simple SQL query in the transaction (e.g., `SELECT 1`) prevents the transaction from becoming idle.

## Snapshot Read-Only Transactions

Snapshot read-only transactions provides a simpler method than locking read-write transactions for doing several consistent reads. However, this type of transaction does not support writes.

Snapshot transactions do not take locks. Instead, they work by choosing a Cloud Spanner timestamp, then executing all reads at that timestamp. Since they do not acquire locks, they do not block concurrent read-write transactions.

Unlike locking read-write transactions, snapshot read-only transactions never abort. They can fail if the chosen read timestamp is garbage collected; however, the default garbage collection policy is generous enough that most applications do not need to worry about this in practice.

Snapshot read-only transactions do not need to call [Commit][google.spanner.v1.Spanner.Commit] or [Rollback][google.spanner.v1.Spanner.Rollback] (and in fact are not permitted to do so).

To execute a snapshot transaction, the client specifies a timestamp bound, which tells Cloud Spanner how to choose a read timestamp.

The types of timestamp bound are:

  • Strong (the default).
  • Bounded staleness.
  • Exact staleness.

If the Cloud Spanner database to be read is geographically distributed, stale read-only transactions can execute more quickly than strong or read-write transaction, because they are able to execute far from the leader replica.

Each type of timestamp bound is discussed in detail below.

### Strong

Strong reads are guaranteed to see the effects of all transactions that have committed before the start of the read. Furthermore, all rows yielded by a single read are consistent with each other -- if any part of the read observes a transaction, all parts of the read see the transaction.

Strong reads are not repeatable: two consecutive strong read-only transactions might return inconsistent results if there are concurrent writes. If consistency across reads is required, the reads should be executed within a transaction or at an exact read timestamp.

See [TransactionOptions.ReadOnly.strong][google.spanner.v1.TransactionOptions.ReadOnly.strong].

### Exact Staleness

These timestamp bounds execute reads at a user-specified timestamp. Reads at a timestamp are guaranteed to see a consistent prefix of the global transaction history: they observe modifications done by all transactions with a commit timestamp <= the read timestamp, and observe none of the modifications done by transactions with a larger commit timestamp. They will block until all conflicting transactions that may be assigned commit timestamps <= the read timestamp have finished.

The timestamp can either be expressed as an absolute Cloud Spanner commit timestamp or a staleness relative to the current time.

These modes do not require a "negotiation phase" to pick a timestamp. As a result, they execute slightly faster than the equivalent boundedly stale concurrency modes. On the other hand, boundedly stale reads usually return fresher results.

See [TransactionOptions.ReadOnly.read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.read_timestamp] and [TransactionOptions.ReadOnly.exact_staleness][google.spanner.v1.TransactionOptions.ReadOnly.exact_staleness].

### Bounded Staleness

Bounded staleness modes allow Cloud Spanner to pick the read timestamp, subject to a user-provided staleness bound. Cloud Spanner chooses the newest timestamp within the staleness bound that allows execution of the reads at the closest available replica without blocking.

All rows yielded are consistent with each other -- if any part of the read observes a transaction, all parts of the read see the transaction. Boundedly stale reads are not repeatable: two stale reads, even if they use the same staleness bound, can execute at different timestamps and thus return inconsistent results.

Boundedly stale reads execute in two phases: the first phase negotiates a timestamp among all replicas needed to serve the read. In the second phase, reads are executed at the negotiated timestamp.

As a result of the two phase execution, bounded staleness reads are usually a little slower than comparable exact staleness reads. However, they are typically able to return fresher results, and are more likely to execute at the closest replica.

Because the timestamp negotiation requires up-front knowledge of which rows will be read, it can only be used with single-use read-only transactions.

See [TransactionOptions.ReadOnly.max_staleness][google.spanner.v1.TransactionOptions.ReadOnly.max_staleness] and [TransactionOptions.ReadOnly.min_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.min_read_timestamp].

### Old Read Timestamps and Garbage Collection

Cloud Spanner continuously garbage collects deleted and overwritten data in the background to reclaim storage space. This process is known as "version GC". By default, version GC reclaims versions after they are one hour old. Because of this, Cloud Spanner cannot perform reads at read timestamps more than one hour in the past. This restriction also applies to in-progress reads and/or SQL queries whose timestamp become too old while executing. Reads and SQL queries with too-old read timestamps fail with the error `FAILED_PRECONDITION`.

## Partitioned DML Transactions

Partitioned DML transactions are used to execute DML statements with a different execution strategy that provides different, and often better, scalability properties for large, table-wide operations than DML in a ReadWrite transaction. Smaller scoped statements, such as an OLTP workload, should prefer using ReadWrite transactions.

Partitioned DML partitions the keyspace and runs the DML statement on each partition in separate, internal transactions. These transactions commit automatically when complete, and run independently from one another.

To reduce lock contention, this execution strategy only acquires read locks on rows that match the WHERE clause of the statement. Additionally, the smaller per-partition transactions hold locks for less time.

That said, Partitioned DML is not a drop-in replacement for standard DML used in ReadWrite transactions.

  • The DML statement must be fully-partitionable. Specifically, the statement must be expressible as the union of many statements which each access only a single row of the table.

  • The statement is not applied atomically to all rows of the table. Rather, the statement is applied atomically to partitions of the table, in independent transactions. Secondary index rows are updated atomically with the base table rows.

  • Partitioned DML does not guarantee exactly-once execution semantics against a partition. The statement will be applied at least once to each partition. It is strongly recommended that the DML statement should be idempotent to avoid unexpected results. For instance, it is potentially dangerous to run a statement such as `UPDATE table SET column = column + 1` as it could be run multiple times against some rows.

  • The partitions are committed automatically - there is no support for Commit or Rollback. If the call returns an error, or if the client issuing the ExecuteSql call dies, it is possible that some rows had the statement executed on them successfully. It is also possible that statement was never executed against other rows.

  • Partitioned DML transactions may only contain the execution of a single DML statement via ExecuteSql or ExecuteStreamingSql.

  • If any error is encountered during the execution of the partitioned DML operation (for instance, a UNIQUE INDEX violation, division by zero, or a value that cannot be stored due to schema constraints), then the operation is stopped at that point and an error is returned. It is possible that at this point, some partitions have been committed (or even committed multiple times), and other partitions have not been run at all.

Given the above, Partitioned DML is good fit for large, database-wide, operations that are idempotent, such as deleting old rows from a very large table.

func (*TransactionOptions) Descriptor deprecated 

func (*TransactionOptions) Descriptor() ([]byte, []int)

Deprecated: Use TransactionOptions.ProtoReflect.Descriptor instead.

func (*TransactionOptions) GetMode 

func (m *TransactionOptions) GetMode() isTransactionOptions_Mode

func (*TransactionOptions) GetPartitionedDml 

func (x *TransactionOptions) GetPartitionedDml() *TransactionOptions_PartitionedDml

func (*TransactionOptions) GetReadOnly 

func (x *TransactionOptions) GetReadOnly() *TransactionOptions_ReadOnly

func (*TransactionOptions) GetReadWrite 

func (x *TransactionOptions) GetReadWrite() *TransactionOptions_ReadWrite

func (*TransactionOptions) ProtoMessage 

func (*TransactionOptions) ProtoMessage()

func (*TransactionOptions) ProtoReflect 

func (x *TransactionOptions) ProtoReflect() protoreflect.Message

func (*TransactionOptions) Reset 

func (x *TransactionOptions) Reset()

func (*TransactionOptions) String 

func (x *TransactionOptions) String() string

type TransactionOptions_PartitionedDml 

type TransactionOptions_PartitionedDml struct {
	// contains filtered or unexported fields
}

Message type to initiate a Partitioned DML transaction.

func (*TransactionOptions_PartitionedDml) Descriptor deprecated 

func (*TransactionOptions_PartitionedDml) Descriptor() ([]byte, []int)

Deprecated: Use TransactionOptions_PartitionedDml.ProtoReflect.Descriptor instead.

func (*TransactionOptions_PartitionedDml) ProtoMessage 

func (*TransactionOptions_PartitionedDml) ProtoMessage()

func (*TransactionOptions_PartitionedDml) ProtoReflect 

func (x *TransactionOptions_PartitionedDml) ProtoReflect() protoreflect.Message

func (*TransactionOptions_PartitionedDml) Reset 

func (x *TransactionOptions_PartitionedDml) Reset()

func (*TransactionOptions_PartitionedDml) String 

func (x *TransactionOptions_PartitionedDml) String() string

type TransactionOptions_PartitionedDml_ 

type TransactionOptions_PartitionedDml_ struct {
	// Partitioned DML transaction.
	//
	// Authorization to begin a Partitioned DML transaction requires
	// `spanner.databases.beginPartitionedDmlTransaction` permission
	// on the `session` resource.
	PartitionedDml *TransactionOptions_PartitionedDml `protobuf:"bytes,3,opt,name=partitioned_dml,json=partitionedDml,proto3,oneof"`
}

type TransactionOptions_ReadOnly 

type TransactionOptions_ReadOnly struct {

	// How to choose the timestamp for the read-only transaction.
	//
	// Types that are assignable to TimestampBound:
	//	*TransactionOptions_ReadOnly_Strong
	//	*TransactionOptions_ReadOnly_MinReadTimestamp
	//	*TransactionOptions_ReadOnly_MaxStaleness
	//	*TransactionOptions_ReadOnly_ReadTimestamp
	//	*TransactionOptions_ReadOnly_ExactStaleness
	TimestampBound isTransactionOptions_ReadOnly_TimestampBound `protobuf_oneof:"timestamp_bound"`
	// If true, the Cloud Spanner-selected read timestamp is included in
	// the [Transaction][google.spanner.v1.Transaction] message that describes the transaction.
	ReturnReadTimestamp bool `protobuf:"varint,6,opt,name=return_read_timestamp,json=returnReadTimestamp,proto3" json:"return_read_timestamp,omitempty"`
	// contains filtered or unexported fields
}

Message type to initiate a read-only transaction.

func (*TransactionOptions_ReadOnly) Descriptor deprecated 

func (*TransactionOptions_ReadOnly) Descriptor() ([]byte, []int)

Deprecated: Use TransactionOptions_ReadOnly.ProtoReflect.Descriptor instead.

func (*TransactionOptions_ReadOnly) GetExactStaleness 

func (x *TransactionOptions_ReadOnly) GetExactStaleness() *durationpb.Duration

func (*TransactionOptions_ReadOnly) GetMaxStaleness 

func (x *TransactionOptions_ReadOnly) GetMaxStaleness() *durationpb.Duration

func (*TransactionOptions_ReadOnly) GetMinReadTimestamp 

func (x *TransactionOptions_ReadOnly) GetMinReadTimestamp() *timestamppb.Timestamp

func (*TransactionOptions_ReadOnly) GetReadTimestamp 

func (x *TransactionOptions_ReadOnly) GetReadTimestamp() *timestamppb.Timestamp

func (*TransactionOptions_ReadOnly) GetReturnReadTimestamp 

func (x *TransactionOptions_ReadOnly) GetReturnReadTimestamp() bool

func (*TransactionOptions_ReadOnly) GetStrong 

func (x *TransactionOptions_ReadOnly) GetStrong() bool

func (*TransactionOptions_ReadOnly) GetTimestampBound 

func (m *TransactionOptions_ReadOnly) GetTimestampBound() isTransactionOptions_ReadOnly_TimestampBound

func (*TransactionOptions_ReadOnly) ProtoMessage 

func (*TransactionOptions_ReadOnly) ProtoMessage()

func (*TransactionOptions_ReadOnly) ProtoReflect 

func (x *TransactionOptions_ReadOnly) ProtoReflect() protoreflect.Message

func (*TransactionOptions_ReadOnly) Reset 

func (x *TransactionOptions_ReadOnly) Reset()

func (*TransactionOptions_ReadOnly) String 

func (x *TransactionOptions_ReadOnly) String() string

type TransactionOptions_ReadOnly_ 

type TransactionOptions_ReadOnly_ struct {
	// Transaction will not write.
	//
	// Authorization to begin a read-only transaction requires
	// `spanner.databases.beginReadOnlyTransaction` permission
	// on the `session` resource.
	ReadOnly *TransactionOptions_ReadOnly `protobuf:"bytes,2,opt,name=read_only,json=readOnly,proto3,oneof"`
}

type TransactionOptions_ReadOnly_ExactStaleness 

type TransactionOptions_ReadOnly_ExactStaleness struct {
	// Executes all reads at a timestamp that is `exact_staleness`
	// old. The timestamp is chosen soon after the read is started.
	//
	// Guarantees that all writes that have committed more than the
	// specified number of seconds ago are visible. Because Cloud Spanner
	// chooses the exact timestamp, this mode works even if the client's
	// local clock is substantially skewed from Cloud Spanner commit
	// timestamps.
	//
	// Useful for reading at nearby replicas without the distributed
	// timestamp negotiation overhead of `max_staleness`.
	ExactStaleness *durationpb.Duration `protobuf:"bytes,5,opt,name=exact_staleness,json=exactStaleness,proto3,oneof"`
}

type TransactionOptions_ReadOnly_MaxStaleness 

type TransactionOptions_ReadOnly_MaxStaleness struct {
	// Read data at a timestamp >= `NOW - max_staleness`
	// seconds. Guarantees that all writes that have committed more
	// than the specified number of seconds ago are visible. Because
	// Cloud Spanner chooses the exact timestamp, this mode works even if
	// the client's local clock is substantially skewed from Cloud Spanner
	// commit timestamps.
	//
	// Useful for reading the freshest data available at a nearby
	// replica, while bounding the possible staleness if the local
	// replica has fallen behind.
	//
	// Note that this option can only be used in single-use
	// transactions.
	MaxStaleness *durationpb.Duration `protobuf:"bytes,3,opt,name=max_staleness,json=maxStaleness,proto3,oneof"`
}

type TransactionOptions_ReadOnly_MinReadTimestamp 

type TransactionOptions_ReadOnly_MinReadTimestamp struct {
	// Executes all reads at a timestamp >= `min_read_timestamp`.
	//
	// This is useful for requesting fresher data than some previous
	// read, or data that is fresh enough to observe the effects of some
	// previously committed transaction whose timestamp is known.
	//
	// Note that this option can only be used in single-use transactions.
	//
	// A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds.
	// Example: `"2014-10-02T15:01:23.045123456Z"`.
	MinReadTimestamp *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=min_read_timestamp,json=minReadTimestamp,proto3,oneof"`
}

type TransactionOptions_ReadOnly_ReadTimestamp 

type TransactionOptions_ReadOnly_ReadTimestamp struct {
	// Executes all reads at the given timestamp. Unlike other modes,
	// reads at a specific timestamp are repeatable; the same read at
	// the same timestamp always returns the same data. If the
	// timestamp is in the future, the read will block until the
	// specified timestamp, modulo the read's deadline.
	//
	// Useful for large scale consistent reads such as mapreduces, or
	// for coordinating many reads against a consistent snapshot of the
	// data.
	//
	// A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds.
	// Example: `"2014-10-02T15:01:23.045123456Z"`.
	ReadTimestamp *timestamppb.Timestamp `protobuf:"bytes,4,opt,name=read_timestamp,json=readTimestamp,proto3,oneof"`
}

type TransactionOptions_ReadOnly_Strong 

type TransactionOptions_ReadOnly_Strong struct {
	// Read at a timestamp where all previously committed transactions
	// are visible.
	Strong bool `protobuf:"varint,1,opt,name=strong,proto3,oneof"`
}

type TransactionOptions_ReadWrite 

type TransactionOptions_ReadWrite struct {
	// contains filtered or unexported fields
}

Message type to initiate a read-write transaction. Currently this transaction type has no options.

func (*TransactionOptions_ReadWrite) Descriptor deprecated 

func (*TransactionOptions_ReadWrite) Descriptor() ([]byte, []int)

Deprecated: Use TransactionOptions_ReadWrite.ProtoReflect.Descriptor instead.

func (*TransactionOptions_ReadWrite) ProtoMessage 

func (*TransactionOptions_ReadWrite) ProtoMessage()

func (*TransactionOptions_ReadWrite) ProtoReflect 

func (x *TransactionOptions_ReadWrite) ProtoReflect() protoreflect.Message

func (*TransactionOptions_ReadWrite) Reset 

func (x *TransactionOptions_ReadWrite) Reset()

func (*TransactionOptions_ReadWrite) String 

func (x *TransactionOptions_ReadWrite) String() string

type TransactionOptions_ReadWrite_ 

type TransactionOptions_ReadWrite_ struct {
	// Transaction may write.
	//
	// Authorization to begin a read-write transaction requires
	// `spanner.databases.beginOrRollbackReadWriteTransaction` permission
	// on the `session` resource.
	ReadWrite *TransactionOptions_ReadWrite `protobuf:"bytes,1,opt,name=read_write,json=readWrite,proto3,oneof"`
}

type TransactionSelector 

type TransactionSelector struct {

	// If no fields are set, the default is a single use transaction
	// with strong concurrency.
	//
	// Types that are assignable to Selector:
	//	*TransactionSelector_SingleUse
	//	*TransactionSelector_Id
	//	*TransactionSelector_Begin
	Selector isTransactionSelector_Selector `protobuf_oneof:"selector"`
	// contains filtered or unexported fields
}

This message is used to select the transaction in which a [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] call runs.

See TransactionOptions[google.spanner.v1.TransactionOptions] for more information about transactions.

func (*TransactionSelector) Descriptor deprecated 

func (*TransactionSelector) Descriptor() ([]byte, []int)

Deprecated: Use TransactionSelector.ProtoReflect.Descriptor instead.

func (*TransactionSelector) GetBegin 

func (x *TransactionSelector) GetBegin() *TransactionOptions

func (*TransactionSelector) GetId 

func (x *TransactionSelector) GetId() []byte

func (*TransactionSelector) GetSelector 

func (m *TransactionSelector) GetSelector() isTransactionSelector_Selector

func (*TransactionSelector) GetSingleUse 

func (x *TransactionSelector) GetSingleUse() *TransactionOptions

func (*TransactionSelector) ProtoMessage 

func (*TransactionSelector) ProtoMessage()

func (*TransactionSelector) ProtoReflect 

func (x *TransactionSelector) ProtoReflect() protoreflect.Message

func (*TransactionSelector) Reset 

func (x *TransactionSelector) Reset()

func (*TransactionSelector) String 

func (x *TransactionSelector) String() string

type TransactionSelector_Begin 

type TransactionSelector_Begin struct {
	// Begin a new transaction and execute this read or SQL query in
	// it. The transaction ID of the new transaction is returned in
	// [ResultSetMetadata.transaction][google.spanner.v1.ResultSetMetadata.transaction], which is a [Transaction][google.spanner.v1.Transaction].
	Begin *TransactionOptions `protobuf:"bytes,3,opt,name=begin,proto3,oneof"`
}

type TransactionSelector_Id 

type TransactionSelector_Id struct {
	// Execute the read or SQL query in a previously-started transaction.
	Id []byte `protobuf:"bytes,2,opt,name=id,proto3,oneof"`
}

type TransactionSelector_SingleUse 

type TransactionSelector_SingleUse struct {
	// Execute the read or SQL query in a temporary transaction.
	// This is the most efficient way to execute a transaction that
	// consists of a single SQL query.
	SingleUse *TransactionOptions `protobuf:"bytes,1,opt,name=single_use,json=singleUse,proto3,oneof"`
}

type Type 

type Type struct {

	// Required. The [TypeCode][google.spanner.v1.TypeCode] for this type.
	Code TypeCode `protobuf:"varint,1,opt,name=code,proto3,enum=google.spanner.v1.TypeCode" json:"code,omitempty"`
	// If [code][google.spanner.v1.Type.code] == [ARRAY][google.spanner.v1.TypeCode.ARRAY], then `array_element_type`
	// is the type of the array elements.
	ArrayElementType *Type `protobuf:"bytes,2,opt,name=array_element_type,json=arrayElementType,proto3" json:"array_element_type,omitempty"`
	// If [code][google.spanner.v1.Type.code] == [STRUCT][google.spanner.v1.TypeCode.STRUCT], then `struct_type`
	// provides type information for the struct's fields.
	StructType *StructType `protobuf:"bytes,3,opt,name=struct_type,json=structType,proto3" json:"struct_type,omitempty"`
	// contains filtered or unexported fields
}

`Type` indicates the type of a Cloud Spanner value, as might be stored in a table cell or returned from an SQL query.

func (*Type) Descriptor deprecated 

func (*Type) Descriptor() ([]byte, []int)

Deprecated: Use Type.ProtoReflect.Descriptor instead.

func (*Type) GetArrayElementType 

func (x *Type) GetArrayElementType() *Type

func (*Type) GetCode 

func (x *Type) GetCode() TypeCode

func (*Type) GetStructType 

func (x *Type) GetStructType() *StructType

func (*Type) ProtoMessage 

func (*Type) ProtoMessage()

func (*Type) ProtoReflect 

func (x *Type) ProtoReflect() protoreflect.Message

func (*Type) Reset 

func (x *Type) Reset()

func (*Type) String 

func (x *Type) String() string

type TypeCode 

type TypeCode int32

`TypeCode` is used as part of Type[google.spanner.v1.Type] to indicate the type of a Cloud Spanner value.

Each legal value of a type can be encoded to or decoded from a JSON value, using the encodings described below. All Cloud Spanner values can be `null`, regardless of type; `null`s are always encoded as a JSON `null`. 

const (
	// Not specified.
	TypeCode_TYPE_CODE_UNSPECIFIED TypeCode = 0
	// Encoded as JSON `true` or `false`.
	TypeCode_BOOL TypeCode = 1
	// Encoded as `string`, in decimal format.
	TypeCode_INT64 TypeCode = 2
	// Encoded as `number`, or the strings `"NaN"`, `"Infinity"`, or
	// `"-Infinity"`.
	TypeCode_FLOAT64 TypeCode = 3
	// Encoded as `string` in RFC 3339 timestamp format. The time zone
	// must be present, and must be `"Z"`.
	//
	// If the schema has the column option
	// `allow_commit_timestamp=true`, the placeholder string
	// `"spanner.commit_timestamp()"` can be used to instruct the system
	// to insert the commit timestamp associated with the transaction
	// commit.
	TypeCode_TIMESTAMP TypeCode = 4
	// Encoded as `string` in RFC 3339 date format.
	TypeCode_DATE TypeCode = 5
	// Encoded as `string`.
	TypeCode_STRING TypeCode = 6
	// Encoded as a base64-encoded `string`, as described in RFC 4648,
	// section 4.
	TypeCode_BYTES TypeCode = 7
	// Encoded as `list`, where the list elements are represented
	// according to
	// [array_element_type][google.spanner.v1.Type.array_element_type].
	TypeCode_ARRAY TypeCode = 8
	// Encoded as `list`, where list element `i` is represented according
	// to [struct_type.fields[i]][google.spanner.v1.StructType.fields].
	TypeCode_STRUCT TypeCode = 9
	// Encoded as `string`, in decimal format or scientific notation format.
	// <br>Decimal format:
	// <br>`[+-]Digits[.[Digits]]` or
	// <br>`[+-][Digits].Digits`
	//
	// Scientific notation:
	// <br>`[+-]Digits[.[Digits]][ExponentIndicator[+-]Digits]` or
	// <br>`[+-][Digits].Digits[ExponentIndicator[+-]Digits]`
	// <br>(ExponentIndicator is `"e"` or `"E"`)
	TypeCode_NUMERIC TypeCode = 10
)

func (TypeCode) Descriptor 

func (TypeCode) Descriptor() protoreflect.EnumDescriptor

func (TypeCode) Enum 

func (x TypeCode) Enum() *TypeCode

func (TypeCode) EnumDescriptor deprecated 

func (TypeCode) EnumDescriptor() ([]byte, []int)

Deprecated: Use TypeCode.Descriptor instead.

func (TypeCode) Number 

func (x TypeCode) Number() protoreflect.EnumNumber

func (TypeCode) String 

func (x TypeCode) String() string

func (TypeCode) Type 

func (TypeCode) Type() protoreflect.EnumType

type UnimplementedSpannerServer 

type UnimplementedSpannerServer struct {
}

UnimplementedSpannerServer can be embedded to have forward compatible implementations.

func (*UnimplementedSpannerServer) BatchCreateSessions 

func (*UnimplementedSpannerServer) BatchCreateSessions(context.Context, *BatchCreateSessionsRequest) (*BatchCreateSessionsResponse, error)

func (*UnimplementedSpannerServer) BeginTransaction 

func (*UnimplementedSpannerServer) BeginTransaction(context.Context, *BeginTransactionRequest) (*Transaction, error)

func (*UnimplementedSpannerServer) Commit 

func (*UnimplementedSpannerServer) Commit(context.Context, *CommitRequest) (*CommitResponse, error)

func (*UnimplementedSpannerServer) CreateSession 

func (*UnimplementedSpannerServer) CreateSession(context.Context, *CreateSessionRequest) (*Session, error)

func (*UnimplementedSpannerServer) DeleteSession 

func (*UnimplementedSpannerServer) DeleteSession(context.Context, *DeleteSessionRequest) (*emptypb.Empty, error)

func (*UnimplementedSpannerServer) ExecuteBatchDml 

func (*UnimplementedSpannerServer) ExecuteBatchDml(context.Context, *ExecuteBatchDmlRequest) (*ExecuteBatchDmlResponse, error)

func (*UnimplementedSpannerServer) ExecuteSql 

func (*UnimplementedSpannerServer) ExecuteSql(context.Context, *ExecuteSqlRequest) (*ResultSet, error)

func (*UnimplementedSpannerServer) ExecuteStreamingSql 

func (*UnimplementedSpannerServer) ExecuteStreamingSql(*ExecuteSqlRequest, Spanner_ExecuteStreamingSqlServer) error

func (*UnimplementedSpannerServer) GetSession 

func (*UnimplementedSpannerServer) GetSession(context.Context, *GetSessionRequest) (*Session, error)

func (*UnimplementedSpannerServer) ListSessions 

func (*UnimplementedSpannerServer) ListSessions(context.Context, *ListSessionsRequest) (*ListSessionsResponse, error)

func (*UnimplementedSpannerServer) PartitionQuery 

func (*UnimplementedSpannerServer) PartitionQuery(context.Context, *PartitionQueryRequest) (*PartitionResponse, error)

func (*UnimplementedSpannerServer) PartitionRead 

func (*UnimplementedSpannerServer) PartitionRead(context.Context, *PartitionReadRequest) (*PartitionResponse, error)

func (*UnimplementedSpannerServer) Read 

func (*UnimplementedSpannerServer) Read(context.Context, *ReadRequest) (*ResultSet, error)

func (*UnimplementedSpannerServer) Rollback 

func (*UnimplementedSpannerServer) Rollback(context.Context, *RollbackRequest) (*emptypb.Empty, error)

func (*UnimplementedSpannerServer) StreamingRead 

func (*UnimplementedSpannerServer) StreamingRead(*ReadRequest, Spanner_StreamingReadServer) error

Source Files

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