Function applyAlias

compiler/semantic/sql.go:387–398

(sctx *super.Context, alias *ast.TableAlias, t relTable, seq sem.Seq)

}

func applyAlias(sctx *super.Context, alias *ast.TableAlias, t relTable, seq sem.Seq) (sem.Seq, relTable, error) {
	if alias == nil || t == badTable {
		return seq, t, nil
	}
	if len(alias.Columns) == 0 {
		return seq, addTableAlias(t, alias.Name), nil
	}
	if t, ok := t.(*staticTable); ok {
		return mapColumns(sctx, t.typ, alias, seq)
	}
	return seq, t, errors.New("cannot apply column aliases to dynamically typed data")
}

func mapColumns(sctx *super.Context, in *super.TypeRecord, alias *ast.TableAlias, seq sem.Seq) (sem.Seq, *staticTable, error) {
	if len(alias.Columns) > len(in.Fields) {