parser

Documentation

Index

• func RemoveCommentInSQLStatement(sql string) (string, error)
• type SQLFlowStmt
  • func Parse(dialect, program string) ([]*SQLFlowStmt, error)
  • func ParseStatement(dialect, program string) (*SQLFlowStmt, error)
  • func (stmt *SQLFlowStmt) IsExtendedSyntax() bool

Functions

func RemoveCommentInSQLStatement

func RemoveCommentInSQLStatement(sql string) (string, error)

RemoveCommentInSQLStatement removes the comments in the SQL statement, including single line comment (--) and multiple line comment (/*...*/)

Types

type SQLFlowStmt

type SQLFlowStmt struct {
	IsUnfinishedSelect bool
	Original           string
	*SQLFlowSelectStmt
	Inputs  []string
	Outputs []string
}

SQLFlowStmt represents a parsed SQL statement. The original statement is in Original. If it is a standard SQL statement, Original has the statement as well, and Extended is nil. Or, if it is a statement with SQLFlow syntax extension, Original is the whole statement and Extended is the parsed extension.

func Parse

func Parse(dialect, program string) ([]*SQLFlowStmt, error)

Parse a SQL program in the given dialect into a list of SQL statements.

func ParseStatement

func ParseStatement(dialect, program string) (*SQLFlowStmt, error)

ParseStatement parses a SQL program by calling Parse, and asserts that this program contains one and only one statement. Notice: If program contains more than one statement, we should call sql.RewriteSQLWithHints

func (*SQLFlowStmt) IsExtendedSyntax

func (stmt *SQLFlowStmt) IsExtendedSyntax() bool

IsExtendedSyntax returns true if a parsed statement uses any SQLFlow syntax extensions.