Struct SetOperation

pkg/sql/ast/ast.go:151–156

SetOperation represents set operations (UNION, EXCEPT, INTERSECT) between two statements. It supports the ALL modifier (e.g., UNION ALL) and proper left-associative parsing. Phase 2 Complete: Full parser support with left-associative precedence.

// It supports the ALL modifier (e.g., UNION ALL) and proper left-associative parsing.
// Phase 2 Complete: Full parser support with left-associative precedence.
type SetOperation struct {
	Left     Statement
	Operator string // UNION, EXCEPT, INTERSECT
	Right    Statement
	All      bool // UNION ALL vs UNION
}

func (s *SetOperation) statementNode()       {}
func (s *SetOperation) queryExpressionNode() {}