Function parseSQL

pkg/transform/transform.go:110–132

parseSQL parses a full SQL statement and returns the first statement's AST.

(sql string)

// parseSQL parses a full SQL statement and returns the first statement's AST.
func parseSQL(sql string) (ast.Statement, error) {
	tkz := tokenizer.GetTokenizer()
	defer tokenizer.PutTokenizer(tkz)

	tokens, err := tkz.Tokenize([]byte(sql))
	if err != nil {
		return nil, fmt.Errorf("tokenize: %w", err)
	}

	p := parser.NewParser()
	defer p.Release()

	tree, err := p.ParseFromModelTokens(tokens)
	if err != nil {
		return nil, fmt.Errorf("parse: %w", err)
	}

	if tree == nil || len(tree.Statements) == 0 {
		return nil, fmt.Errorf("no statements parsed")
	}

	return tree.Statements[0], nil
}

// parseCondition parses a SQL condition expression by wrapping it in a SELECT.
func parseCondition(sql string) (ast.Expression, error) {