SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 1) Function arraySort (children 1) ExpressionList (children 1) Function arraySymmetricDifference (children 1) ExpressionList (children 3) Literal Array_[UInt64_1, UInt64_2] Literal Array_[UInt64_1, UInt64_2] Literal Array_[UInt64_1, UInt64_2]