Method parseStringConcatExpression

pkg/sql/parser/expressions.go:116–143

parseStringConcatExpression parses expressions with || (string concatenation) operator

()

// parseStringConcatExpression parses expressions with || (string concatenation) operator
func (p *Parser) parseStringConcatExpression() (ast.Expression, error) {
	// Parse the left side using additive expression
	left, err := p.parseAdditiveExpression()
	if err != nil {
		return nil, err
	}

	// Handle || (string concatenation) operator (left-associative)
	for p.isType(models.TokenTypeStringConcat) {
		opPos := p.currentLocation()
		operator := p.currentToken.Token.Value
		p.advance() // Consume ||

		right, err := p.parseAdditiveExpression()
		if err != nil {
			return nil, err
		}

		left = &ast.BinaryExpression{
			Left:     left,
			Operator: operator,
			Right:    right,
			Pos:      opPos,
		}
	}

	return left, nil
}

// parseAdditiveExpression parses expressions with + and - operators
func (p *Parser) parseAdditiveExpression() (ast.Expression, error) {