SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 1) Function in (children 1) ExpressionList (children 2) Literal UInt64_1 Function tuple (children 1) ExpressionList (children 5) Literal UInt64_1 Literal UInt64_2 Literal UInt64_3 Literal UInt64_4 Literal UInt64_5 Set