expander

package
v1.31.1 Latest Latest
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 Go to latest Published: Apr 22, 2026 License: MIT Imports: 7 Imported by: 0

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Types

type ColumnGetter 

type ColumnGetter interface {
	GetColumnNames(ctx context.Context, query string) ([]string, error)
}

ColumnGetter retrieves column names for a query by preparing it against a database.

type Expander 

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

Expander expands SELECT * and RETURNING * queries by replacing * with explicit column names obtained from preparing the query against a database.

func New 

func New(colGetter ColumnGetter, parser Parser, dialect format.Dialect) *Expander

New creates a new Expander with the given column getter, parser, and dialect.

func (*Expander) Expand 

func (e *Expander) Expand(ctx context.Context, query string) (string, error)

Expand takes a SQL query, and if it contains * in SELECT or RETURNING clause, expands it to use explicit column names. Returns the expanded query string.

type Parser 

type Parser interface {
	Parse(r io.Reader) ([]ast.Statement, error)
}

Parser is an interface for SQL parsers that can parse SQL into AST statements.

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