walk

Documentation

Index

• func AllColsContained(set ReferredCols, cols []string) bool
• type AstWalker
  • func (w *AstWalker) Walk(stmts parser.Statements, ctx interface{}) (ok bool, err error)
• type ReferredCols
  • func ColNamesInSelect(sql string) (referredCols ReferredCols, err error)
  • func (rc ReferredCols) ToList() []string

Functions

func AllColsContained

func AllColsContained(set ReferredCols, cols []string) bool

Types

type AstWalker

type AstWalker struct {
	UnknownNodes []interface{}
	Fn           func(ctx interface{}, node interface{}) (stop bool)
}

func (*AstWalker) Walk

func (w *AstWalker) Walk(stmts parser.Statements, ctx interface{}) (ok bool, err error)

type ReferredCols

type ReferredCols map[string]int

func ColNamesInSelect

func ColNamesInSelect(sql string) (referredCols ReferredCols, err error)

ColNamesInSelect finds all referred variables in a Select Statement. (variables = sub-expressions, placeholders, indexed vars, etc.) Implementation limits:

1. Table with AS is not normalized.
2. Columns referred from outer query are not translated.

func (ReferredCols) ToList

func (rc ReferredCols) ToList() []string