SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 1) Function in (children 1) ExpressionList (children 2) Function tuple (children 1) ExpressionList (children 2) Literal Array_[UInt64_1] Literal Array_[UInt64_2] Function tuple (children 1) ExpressionList (children 2) Function tuple (children 1) ExpressionList (children 2) Literal Array_[NULL] Literal Array_[NULL] Function tuple (children 1) ExpressionList (children 2) Literal Array_[UInt64_1] Literal Array_[UInt64_2]