README

Squirrel - fluent SQL generator for Go

import "gopkg.in/Masterminds/squirrel.v1"

or if you prefer using master (which may be arbitrarily ahead of or behind v1):

NOTE: as of Go 1.6, go get correctly clones the Github default branch (which is v1 in this repo).

import "github.com/Masterminds/squirrel"

GoDoc Build Status

_Note: This project has moved from github.com/lann/squirrel to github.com/Masterminds/squirrel. Lann remains the architect of the project, but we're helping him curate.

Squirrel is not an ORM. For an application of Squirrel, check out structable, a table-struct mapper

Squirrel helps you build SQL queries from composable parts:

import sq "github.com/Masterminds/squirrel"

users := sq.Select("*").From("users").Join("emails USING (email_id)")

active := users.Where(sq.Eq{"deleted_at": nil})

sql, args, err := active.ToSql()

sql == "SELECT * FROM users JOIN emails USING (email_id) WHERE deleted_at IS NULL"
sql, args, err := sq.
    Insert("users").Columns("name", "age").
    Values("moe", 13).Values("larry", sq.Expr("? + 5", 12)).
    ToSql()

sql == "INSERT INTO users (name,age) VALUES (?,?),(?,? + 5)"

Squirrel can also execute queries directly:

stooges := users.Where(sq.Eq{"username": []string{"moe", "larry", "curly", "shemp"}})
three_stooges := stooges.Limit(3)
rows, err := three_stooges.RunWith(db).Query()

// Behaves like:
rows, err := db.Query("SELECT * FROM users WHERE username IN (?,?,?,?) LIMIT 3",
                      "moe", "larry", "curly", "shemp")

Squirrel makes conditional query building a breeze:

if len(q) > 0 {
    users = users.Where("name LIKE ?", fmt.Sprint("%", q, "%"))
}

Squirrel wants to make your life easier:

// StmtCache caches Prepared Stmts for you
dbCache := sq.NewStmtCacher(db)

// StatementBuilder keeps your syntax neat
mydb := sq.StatementBuilder.RunWith(dbCache)
select_users := mydb.Select("*").From("users")

Squirrel loves PostgreSQL:

psql := sq.StatementBuilder.PlaceholderFormat(sq.Dollar)

// You use question marks for placeholders...
sql, _, _ := psql.Select("*").From("elephants").Where("name IN (?,?)", "Dumbo", "Verna").ToSql()

/// ...squirrel replaces them using PlaceholderFormat.
sql == "SELECT * FROM elephants WHERE name IN ($1,$2)"


/// You can retrieve id ...
query := sq.Insert("nodes").
    Columns("uuid", "type", "data").
    Values(node.Uuid, node.Type, node.Data).
    Suffix("RETURNING \"id\"").
    RunWith(m.db).
    PlaceholderFormat(sq.Dollar)

query.QueryRow().Scan(&node.id)

You can escape question mask by inserting two question marks:

SELECT * FROM nodes WHERE meta->'format' ??| array[?,?]

will generate with the Dollar Placeholder:

SELECT * FROM nodes WHERE meta->'format' ?| array[$1,$2]

FAQ

  • How can I build an IN query on composite keys / tuples, e.g. WHERE (col1, col2) IN ((1,2),(3,4))? (#104)

    Squirrel does not explicitly support tuples, but you can get the same effect with e.g.:

    sq.Or{
      sq.Eq{"col1": 1, "col2": 2},
      sq.Eq{"col1": 3, "col2": 4}}
    
    WHERE (col1 = 1 AND col2 = 2) OR (col1 = 3 AND col2 = 4)
    

    (which should produce the same query plan as the tuple version)

  • Why doesn't Eq{"mynumber": []uint8{1,2,3}} turn into an IN query? (#114)

    Values of type []byte are handled specially by database/sql. In Go, byte is just an alias of uint8, so there is no way to distinguish []uint8 from []byte.

  • Some features are poorly documented!

    This isn't a frequent complaints section!

  • Some features are poorly documented?

    Yes. The tests should be considered a part of the documentation; take a look at those for ideas on how to express more complex queries.

License

Squirrel is released under the MIT License.

Documentation

Overview

Package squirrel provides a fluent SQL generator.

See https://github.com/Masterminds/squirrel for examples.

Index

Constants

This section is empty.

Variables

View Source
var (
	// Question is a PlaceholderFormat instance that leaves placeholders as
	// question marks.
	Question = questionFormat{}

	// Dollar is a PlaceholderFormat instance that replaces placeholders with
	// dollar-prefixed positional placeholders (e.g. $1, $2, $3).
	Dollar = dollarFormat{}

	// Colon is a PlaceholderFormat instance that replaces placeholders with
	// colon-prefixed positional placeholders (e.g. :1, :2, :3).
	Colon = colonFormat{}
)
View Source
var NoContextSupport = errors.New("DB does not support Context")

NoContextSupport is returned if a db doesn't support Context.

View Source
var RunnerNotQueryRunner = fmt.Errorf("cannot QueryRow; Runner is not a QueryRower")

RunnerNotQueryRunner is returned by QueryRow if the RunWith value doesn't implement QueryRower.

View Source
var RunnerNotSet = fmt.Errorf("cannot run; no Runner set (RunWith)")

RunnerNotSet is returned by methods that need a Runner if it isn't set.

View Source
var StatementBuilder = StatementBuilderType(builder.EmptyBuilder).PlaceholderFormat(Question)

StatementBuilder is a parent builder for other builders, e.g. SelectBuilder.

Functions

func Alias

func Alias(expr Sqlizer, alias string) aliasExpr

Alias allows to define alias for column in SelectBuilder. Useful when column is defined as complex expression like IF or CASE Ex:

.Column(Alias(caseStmt, "case_column"))

func DebugSqlizer

func DebugSqlizer(s Sqlizer) string

DebugSqlizer calls ToSql on s and shows the approximate SQL to be executed

If ToSql returns an error, the result of this method will look like: "[ToSql error: %s]" or "[DebugSqlizer error: %s]"

IMPORTANT: As its name suggests, this function should only be used for debugging. While the string result *might* be valid SQL, this function does not try very hard to ensure it. Additionally, executing the output of this function with any untrusted user input is certainly insecure.

func ExecContextWith

func ExecContextWith(ctx context.Context, db ExecerContext, s Sqlizer) (res sql.Result, err error)

ExecContextWith ExecContexts the SQL returned by s with db.

func ExecWith

func ExecWith(db Execer, s Sqlizer) (res sql.Result, err error)

ExecWith Execs the SQL returned by s with db.

func Expr

func Expr(sql string, args ...interface{}) expr

Expr builds value expressions for InsertBuilder and UpdateBuilder.

Ex:

.Values(Expr("FROM_UNIXTIME(?)", t))

func Placeholders

func Placeholders(count int) string

Placeholders returns a string with count ? placeholders joined with commas.

func QueryContextWith

func QueryContextWith(ctx context.Context, db QueryerContext, s Sqlizer) (rows *sql.Rows, err error)

QueryContextWith QueryContexts the SQL returned by s with db.

func QueryWith

func QueryWith(db Queryer, s Sqlizer) (rows *sql.Rows, err error)

QueryWith Querys the SQL returned by s with db.

Types

type And

type And conj

func (And) ToSql

func (a And) ToSql() (string, []interface{}, error)

type BaseRunner

type BaseRunner interface {
	Execer
	Queryer
}

BaseRunner groups the Execer and Queryer interfaces.

type CaseBuilder

type CaseBuilder builder.Builder

CaseBuilder builds SQL CASE construct which could be used as parts of queries.

func Case

func Case(what ...interface{}) CaseBuilder

Case returns a new CaseBuilder "what" represents case value

func (CaseBuilder) Else

func (b CaseBuilder) Else(expr interface{}) CaseBuilder

What sets optional "ELSE ..." part for CASE construct

func (CaseBuilder) ToSql

func (b CaseBuilder) ToSql() (string, []interface{}, error)

ToSql builds the query into a SQL string and bound args.

func (CaseBuilder) When

func (b CaseBuilder) When(when interface{}, then interface{}) CaseBuilder

When adds "WHEN ... THEN ..." part to CASE construct

type DBProxy

type DBProxy interface {
	Execer
	Queryer
	QueryRower
	Preparer
}

DBProxy groups the Execer, Queryer, QueryRower, and Preparer interfaces.

type DBProxyBeginner

type DBProxyBeginner interface {
	DBProxy
	Begin() (*sql.Tx, error)
}

func NewStmtCacheProxy

func NewStmtCacheProxy(db *sql.DB) DBProxyBeginner

type DBProxyContext

type DBProxyContext interface {
	Execer
	Queryer
	QueryRower
	PreparerContext
}

DBProxyContext groups the Execer, Queryer, QueryRower and PreparerContext interfaces.

func NewStmtCacher

func NewStmtCacher(prep PreparerContext) DBProxyContext

NewStmtCacher returns a DBProxy wrapping prep that caches Prepared Stmts.

Stmts are cached based on the string value of their queries.

type DeleteBuilder

type DeleteBuilder builder.Builder

DeleteBuilder builds SQL DELETE statements.

func Delete

func Delete(from string) DeleteBuilder

Delete returns a new DeleteBuilder with the given table name.

See DeleteBuilder.Table.

func (DeleteBuilder) Exec

func (b DeleteBuilder) Exec() (sql.Result, error)

Exec builds and Execs the query with the Runner set by RunWith.

func (DeleteBuilder) ExecContext

func (b DeleteBuilder) ExecContext(ctx context.Context) (sql.Result, error)

ExecContext builds and ExecContexts the query with the Runner set by RunWith.

func (DeleteBuilder) From

func (b DeleteBuilder) From(from string) DeleteBuilder

From sets the table to be deleted from.

func (DeleteBuilder) Limit

func (b DeleteBuilder) Limit(limit uint64) DeleteBuilder

Limit sets a LIMIT clause on the query.

func (DeleteBuilder) Offset

func (b DeleteBuilder) Offset(offset uint64) DeleteBuilder

Offset sets a OFFSET clause on the query.

func (DeleteBuilder) OrderBy

func (b DeleteBuilder) OrderBy(orderBys ...string) DeleteBuilder

OrderBy adds ORDER BY expressions to the query.

func (DeleteBuilder) PlaceholderFormat

func (b DeleteBuilder) PlaceholderFormat(f PlaceholderFormat) DeleteBuilder

PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the query.

func (DeleteBuilder) Prefix

func (b DeleteBuilder) Prefix(sql string, args ...interface{}) DeleteBuilder

Prefix adds an expression to the beginning of the query

func (DeleteBuilder) RunWith

func (b DeleteBuilder) RunWith(runner BaseRunner) DeleteBuilder

RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.

func (DeleteBuilder) Suffix

func (b DeleteBuilder) Suffix(sql string, args ...interface{}) DeleteBuilder

Suffix adds an expression to the end of the query

func (DeleteBuilder) ToSql

func (b DeleteBuilder) ToSql() (string, []interface{}, error)

ToSql builds the query into a SQL string and bound args.

func (DeleteBuilder) Where

func (b DeleteBuilder) Where(pred interface{}, args ...interface{}) DeleteBuilder

Where adds WHERE expressions to the query.

See SelectBuilder.Where for more information.

type Eq

type Eq map[string]interface{}

Eq is syntactic sugar for use with Where/Having/Set methods. Ex:

.Where(Eq{"id": 1})

func (Eq) ToSql

func (eq Eq) ToSql() (sql string, args []interface{}, err error)

type Execer

type Execer interface {
	Exec(query string, args ...interface{}) (sql.Result, error)
}

Execer is the interface that wraps the Exec method.

Exec executes the given query as implemented by database/sql.Exec.

type ExecerContext

type ExecerContext interface {
	ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
}

ExecerContext is the interface that wraps the ExecContext method.

Exec executes the given query as implemented by database/sql.ExecContext.

type Gt

type Gt Lt

Gt is syntactic sugar for use with Where/Having/Set methods. Ex:

.Where(Gt{"id": 1}) == "id > 1"

func (Gt) ToSql

func (gt Gt) ToSql() (sql string, args []interface{}, err error)

type GtOrEq

type GtOrEq Lt

GtOrEq is syntactic sugar for use with Where/Having/Set methods. Ex:

.Where(GtOrEq{"id": 1}) == "id >= 1"

func (GtOrEq) ToSql

func (gtOrEq GtOrEq) ToSql() (sql string, args []interface{}, err error)

type InsertBuilder

type InsertBuilder builder.Builder

InsertBuilder builds SQL INSERT statements.

func Insert

func Insert(into string) InsertBuilder

Insert returns a new InsertBuilder with the given table name.

See InsertBuilder.Into.

func (InsertBuilder) Columns

func (b InsertBuilder) Columns(columns ...string) InsertBuilder

Columns adds insert columns to the query.

func (InsertBuilder) Exec

func (b InsertBuilder) Exec() (sql.Result, error)

Exec builds and Execs the query with the Runner set by RunWith.

func (InsertBuilder) ExecContext

func (b InsertBuilder) ExecContext(ctx context.Context) (sql.Result, error)

ExecContext builds and ExecContexts the query with the Runner set by RunWith.

func (InsertBuilder) Into

func (b InsertBuilder) Into(from string) InsertBuilder

Into sets the INTO clause of the query.

func (InsertBuilder) Options

func (b InsertBuilder) Options(options ...string) InsertBuilder

Options adds keyword options before the INTO clause of the query.

func (InsertBuilder) PlaceholderFormat

func (b InsertBuilder) PlaceholderFormat(f PlaceholderFormat) InsertBuilder

PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the query.

func (InsertBuilder) Prefix

func (b InsertBuilder) Prefix(sql string, args ...interface{}) InsertBuilder

Prefix adds an expression to the beginning of the query

func (InsertBuilder) Query

func (b InsertBuilder) Query() (*sql.Rows, error)

Query builds and Querys the query with the Runner set by RunWith.

func (InsertBuilder) QueryContext

func (b InsertBuilder) QueryContext(ctx context.Context) (*sql.Rows, error)

QueryContext builds and QueryContexts the query with the Runner set by RunWith.

func (InsertBuilder) QueryRow

func (b InsertBuilder) QueryRow() RowScanner

QueryRow builds and QueryRows the query with the Runner set by RunWith.

func (InsertBuilder) QueryRowContext

func (b InsertBuilder) QueryRowContext(ctx context.Context) RowScanner

QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.

func (InsertBuilder) RunWith

func (b InsertBuilder) RunWith(runner BaseRunner) InsertBuilder

RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.

func (InsertBuilder) Scan

func (b InsertBuilder) Scan(dest ...interface{}) error

Scan is a shortcut for QueryRow().Scan.

func (InsertBuilder) ScanContext

func (b InsertBuilder) ScanContext(ctx context.Context, dest ...interface{}) error

ScanContext is a shortcut for QueryRowContext().Scan.

func (InsertBuilder) Select

Select set Select clause for insert query If Values and Select are used, then Select has higher priority

func (InsertBuilder) SetMap

func (b InsertBuilder) SetMap(clauses map[string]interface{}) InsertBuilder

SetMap set columns and values for insert builder from a map of column name and value note that it will reset all previous columns and values was set if any

func (InsertBuilder) Suffix

func (b InsertBuilder) Suffix(sql string, args ...interface{}) InsertBuilder

Suffix adds an expression to the end of the query

func (InsertBuilder) ToSql

func (b InsertBuilder) ToSql() (string, []interface{}, error)

ToSql builds the query into a SQL string and bound args.

func (InsertBuilder) Values

func (b InsertBuilder) Values(values ...interface{}) InsertBuilder

Values adds a single row's values to the query.

type Like

type Like map[string]interface{}

Like is syntactic sugar for use with LIKE conditions. Ex:

.Where(Like{"name": "%irrel"})

func (Like) ToSql

func (lk Like) ToSql() (sql string, args []interface{}, err error)

type Lt

type Lt map[string]interface{}

Lt is syntactic sugar for use with Where/Having/Set methods. Ex:

.Where(Lt{"id": 1})

func (Lt) ToSql

func (lt Lt) ToSql() (sql string, args []interface{}, err error)

type LtOrEq

type LtOrEq Lt

LtOrEq is syntactic sugar for use with Where/Having/Set methods. Ex:

.Where(LtOrEq{"id": 1}) == "id <= 1"

func (LtOrEq) ToSql

func (ltOrEq LtOrEq) ToSql() (sql string, args []interface{}, err error)

type NotEq

type NotEq Eq

NotEq is syntactic sugar for use with Where/Having/Set methods. Ex:

.Where(NotEq{"id": 1}) == "id <> 1"

func (NotEq) ToSql

func (neq NotEq) ToSql() (sql string, args []interface{}, err error)

type NotLike

type NotLike Like

NotLike is syntactic sugar for use with LIKE conditions. Ex:

.Where(NotLike{"name": "%irrel"})

func (NotLike) ToSql

func (nlk NotLike) ToSql() (sql string, args []interface{}, err error)

type Or

type Or conj

func (Or) ToSql

func (o Or) ToSql() (string, []interface{}, error)

type PlaceholderFormat

type PlaceholderFormat interface {
	ReplacePlaceholders(sql string) (string, error)
}

PlaceholderFormat is the interface that wraps the ReplacePlaceholders method.

ReplacePlaceholders takes a SQL statement and replaces each question mark placeholder with a (possibly different) SQL placeholder.

type Preparer

type Preparer interface {
	Prepare(query string) (*sql.Stmt, error)
}

Prepareer is the interface that wraps the Prepare method.

Prepare executes the given query as implemented by database/sql.Prepare.

type PreparerContext

type PreparerContext interface {
	Preparer
	PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
}

PrepareerContext is the interface that wraps the Prepare and PrepareContext methods.

Prepare executes the given query as implemented by database/sql.Prepare. PrepareContext executes the given query as implemented by database/sql.PrepareContext.

type QueryRower

type QueryRower interface {
	QueryRow(query string, args ...interface{}) RowScanner
}

QueryRower is the interface that wraps the QueryRow method.

QueryRow executes the given query as implemented by database/sql.QueryRow.

type QueryRowerContext

type QueryRowerContext interface {
	QueryRowContext(ctx context.Context, query string, args ...interface{}) RowScanner
}

QueryRowerContext is the interface that wraps the QueryRowContext method.

QueryRowContext executes the given query as implemented by database/sql.QueryRowContext.

type Queryer

type Queryer interface {
	Query(query string, args ...interface{}) (*sql.Rows, error)
}

Queryer is the interface that wraps the Query method.

Query executes the given query as implemented by database/sql.Query.

type QueryerContext

type QueryerContext interface {
	QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
}

QueryerContext is the interface that wraps the QueryContext method.

QueryContext executes the given query as implemented by database/sql.QueryContext.

type Row

type Row struct {
	RowScanner
	// contains filtered or unexported fields
}

Row wraps database/sql.Row to let squirrel return new errors on Scan.

func (*Row) Scan

func (r *Row) Scan(dest ...interface{}) error

Scan returns Row.err or calls RowScanner.Scan.

type RowScanner

type RowScanner interface {
	Scan(...interface{}) error
}

RowScanner is the interface that wraps the Scan method.

Scan behaves like database/sql.Row.Scan.

func QueryRowContextWith

func QueryRowContextWith(ctx context.Context, db QueryRowerContext, s Sqlizer) RowScanner

QueryRowContextWith QueryRowContexts the SQL returned by s with db.

func QueryRowWith

func QueryRowWith(db QueryRower, s Sqlizer) RowScanner

QueryRowWith QueryRows the SQL returned by s with db.

type Runner

type Runner interface {
	Execer
	Queryer
	QueryRower
}

Runner groups the Execer, Queryer, and QueryRower interfaces.

type SelectBuilder

type SelectBuilder builder.Builder

SelectBuilder builds SQL SELECT statements.

func Select

func Select(columns ...string) SelectBuilder

Select returns a new SelectBuilder, optionally setting some result columns.

See SelectBuilder.Columns.

func (SelectBuilder) Column

func (b SelectBuilder) Column(column interface{}, args ...interface{}) SelectBuilder

Column adds a result column to the query. Unlike Columns, Column accepts args which will be bound to placeholders in the columns string, for example:

Column("IF(col IN ("+squirrel.Placeholders(3)+"), 1, 0) as col", 1, 2, 3)

func (SelectBuilder) Columns

func (b SelectBuilder) Columns(columns ...string) SelectBuilder

Columns adds result columns to the query.

func (SelectBuilder) Distinct

func (b SelectBuilder) Distinct() SelectBuilder

Distinct adds a DISTINCT clause to the query.

func (SelectBuilder) Exec

func (b SelectBuilder) Exec() (sql.Result, error)

Exec builds and Execs the query with the Runner set by RunWith.

func (SelectBuilder) ExecContext

func (b SelectBuilder) ExecContext(ctx context.Context) (sql.Result, error)

ExecContext builds and ExecContexts the query with the Runner set by RunWith.

func (SelectBuilder) From

func (b SelectBuilder) From(from string) SelectBuilder

From sets the FROM clause of the query.

func (SelectBuilder) FromSelect

func (b SelectBuilder) FromSelect(from SelectBuilder, alias string) SelectBuilder

FromSelect sets a subquery into the FROM clause of the query.

func (SelectBuilder) GroupBy

func (b SelectBuilder) GroupBy(groupBys ...string) SelectBuilder

GroupBy adds GROUP BY expressions to the query.

func (SelectBuilder) Having

func (b SelectBuilder) Having(pred interface{}, rest ...interface{}) SelectBuilder

Having adds an expression to the HAVING clause of the query.

See Where.

func (SelectBuilder) Join

func (b SelectBuilder) Join(join string, rest ...interface{}) SelectBuilder

Join adds a JOIN clause to the query.

func (SelectBuilder) JoinClause

func (b SelectBuilder) JoinClause(pred interface{}, args ...interface{}) SelectBuilder

JoinClause adds a join clause to the query.

func (SelectBuilder) LeftJoin

func (b SelectBuilder) LeftJoin(join string, rest ...interface{}) SelectBuilder

LeftJoin adds a LEFT JOIN clause to the query.

func (SelectBuilder) Limit

func (b SelectBuilder) Limit(limit uint64) SelectBuilder

Limit sets a LIMIT clause on the query.

func (SelectBuilder) Offset

func (b SelectBuilder) Offset(offset uint64) SelectBuilder

Offset sets a OFFSET clause on the query.

func (SelectBuilder) Options

func (b SelectBuilder) Options(options ...string) SelectBuilder

Options adds select option to the query

func (SelectBuilder) OrderBy

func (b SelectBuilder) OrderBy(orderBys ...string) SelectBuilder

OrderBy adds ORDER BY expressions to the query.

func (SelectBuilder) PlaceholderFormat

func (b SelectBuilder) PlaceholderFormat(f PlaceholderFormat) SelectBuilder

PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the query.

func (SelectBuilder) Prefix

func (b SelectBuilder) Prefix(sql string, args ...interface{}) SelectBuilder

Prefix adds an expression to the beginning of the query

func (SelectBuilder) Query

func (b SelectBuilder) Query() (*sql.Rows, error)

Query builds and Querys the query with the Runner set by RunWith.

func (SelectBuilder) QueryContext

func (b SelectBuilder) QueryContext(ctx context.Context) (*sql.Rows, error)

QueryContext builds and QueryContexts the query with the Runner set by RunWith.

func (SelectBuilder) QueryRow

func (b SelectBuilder) QueryRow() RowScanner

QueryRow builds and QueryRows the query with the Runner set by RunWith.

func (SelectBuilder) QueryRowContext

func (b SelectBuilder) QueryRowContext(ctx context.Context) RowScanner

QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.

func (SelectBuilder) RightJoin

func (b SelectBuilder) RightJoin(join string, rest ...interface{}) SelectBuilder

RightJoin adds a RIGHT JOIN clause to the query.

func (SelectBuilder) RunWith

func (b SelectBuilder) RunWith(runner BaseRunner) SelectBuilder

RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.

func (SelectBuilder) Scan

func (b SelectBuilder) Scan(dest ...interface{}) error

Scan is a shortcut for QueryRow().Scan.

func (SelectBuilder) ScanContext

func (b SelectBuilder) ScanContext(ctx context.Context, dest ...interface{}) error

ScanContext is a shortcut for QueryRowContext().Scan.

func (SelectBuilder) Suffix

func (b SelectBuilder) Suffix(sql string, args ...interface{}) SelectBuilder

Suffix adds an expression to the end of the query

func (SelectBuilder) ToSql

func (b SelectBuilder) ToSql() (string, []interface{}, error)

ToSql builds the query into a SQL string and bound args.

func (SelectBuilder) Where

func (b SelectBuilder) Where(pred interface{}, args ...interface{}) SelectBuilder

Where adds an expression to the WHERE clause of the query.

Expressions are ANDed together in the generated SQL.

Where accepts several types for its pred argument:

nil OR "" - ignored.

string - SQL expression. If the expression has SQL placeholders then a set of arguments must be passed as well, one for each placeholder.

map[string]interface{} OR Eq - map of SQL expressions to values. Each key is transformed into an expression like "<key> = ?", with the corresponding value bound to the placeholder. If the value is nil, the expression will be "<key> IS NULL". If the value is an array or slice, the expression will be "<key> IN (?,?,...)", with one placeholder for each item in the value. These expressions are ANDed together.

Where will panic if pred isn't any of the above types.

type Sqlizer

type Sqlizer interface {
	ToSql() (string, []interface{}, error)
}

Sqlizer is the interface that wraps the ToSql method.

ToSql returns a SQL representation of the Sqlizer, along with a slice of args as passed to e.g. database/sql.Exec. It can also return an error.

type StatementBuilderType

type StatementBuilderType builder.Builder

StatementBuilderType is the type of StatementBuilder.

func (StatementBuilderType) Delete

func (b StatementBuilderType) Delete(from string) DeleteBuilder

Delete returns a DeleteBuilder for this StatementBuilderType.

func (StatementBuilderType) Insert

func (b StatementBuilderType) Insert(into string) InsertBuilder

Insert returns a InsertBuilder for this StatementBuilderType.

func (StatementBuilderType) PlaceholderFormat

PlaceholderFormat sets the PlaceholderFormat field for any child builders.

func (StatementBuilderType) RunWith

RunWith sets the RunWith field for any child builders.

func (StatementBuilderType) Select

func (b StatementBuilderType) Select(columns ...string) SelectBuilder

Select returns a SelectBuilder for this StatementBuilderType.

func (StatementBuilderType) Update

func (b StatementBuilderType) Update(table string) UpdateBuilder

Update returns a UpdateBuilder for this StatementBuilderType.

type UpdateBuilder

type UpdateBuilder builder.Builder

UpdateBuilder builds SQL UPDATE statements.

func Update

func Update(table string) UpdateBuilder

Update returns a new UpdateBuilder with the given table name.

See UpdateBuilder.Table.

func (UpdateBuilder) Exec

func (b UpdateBuilder) Exec() (sql.Result, error)

Exec builds and Execs the query with the Runner set by RunWith.

func (UpdateBuilder) ExecContext

func (b UpdateBuilder) ExecContext(ctx context.Context) (sql.Result, error)

ExecContext builds and ExecContexts the query with the Runner set by RunWith.

func (UpdateBuilder) Limit

func (b UpdateBuilder) Limit(limit uint64) UpdateBuilder

Limit sets a LIMIT clause on the query.

func (UpdateBuilder) Offset

func (b UpdateBuilder) Offset(offset uint64) UpdateBuilder

Offset sets a OFFSET clause on the query.

func (UpdateBuilder) OrderBy

func (b UpdateBuilder) OrderBy(orderBys ...string) UpdateBuilder

OrderBy adds ORDER BY expressions to the query.

func (UpdateBuilder) PlaceholderFormat

func (b UpdateBuilder) PlaceholderFormat(f PlaceholderFormat) UpdateBuilder

PlaceholderFormat sets PlaceholderFormat (e.g. Question or Dollar) for the query.

func (UpdateBuilder) Prefix

func (b UpdateBuilder) Prefix(sql string, args ...interface{}) UpdateBuilder

Prefix adds an expression to the beginning of the query

func (UpdateBuilder) Query

func (b UpdateBuilder) Query() (*sql.Rows, error)

func (UpdateBuilder) QueryContext

func (b UpdateBuilder) QueryContext(ctx context.Context) (*sql.Rows, error)

QueryContext builds and QueryContexts the query with the Runner set by RunWith.

func (UpdateBuilder) QueryRow

func (b UpdateBuilder) QueryRow() RowScanner

func (UpdateBuilder) QueryRowContext

func (b UpdateBuilder) QueryRowContext(ctx context.Context) RowScanner

QueryRowContext builds and QueryRowContexts the query with the Runner set by RunWith.

func (UpdateBuilder) RunWith

func (b UpdateBuilder) RunWith(runner BaseRunner) UpdateBuilder

RunWith sets a Runner (like database/sql.DB) to be used with e.g. Exec.

func (UpdateBuilder) Scan

func (b UpdateBuilder) Scan(dest ...interface{}) error

func (UpdateBuilder) ScanContext

func (b UpdateBuilder) ScanContext(ctx context.Context, dest ...interface{}) error

ScanContext is a shortcut for QueryRowContext().Scan.

func (UpdateBuilder) Set

func (b UpdateBuilder) Set(column string, value interface{}) UpdateBuilder

Set adds SET clauses to the query.

func (UpdateBuilder) SetMap

func (b UpdateBuilder) SetMap(clauses map[string]interface{}) UpdateBuilder

SetMap is a convenience method which calls .Set for each key/value pair in clauses.

func (UpdateBuilder) Suffix

func (b UpdateBuilder) Suffix(sql string, args ...interface{}) UpdateBuilder

Suffix adds an expression to the end of the query

func (UpdateBuilder) Table

func (b UpdateBuilder) Table(table string) UpdateBuilder

Table sets the table to be updated.

func (UpdateBuilder) ToSql

func (b UpdateBuilder) ToSql() (string, []interface{}, error)

ToSql builds the query into a SQL string and bound args.

func (UpdateBuilder) Where

func (b UpdateBuilder) Where(pred interface{}, args ...interface{}) UpdateBuilder

Where adds WHERE expressions to the query.

See SelectBuilder.Where for more information.