SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 1) Function arrayIntersect (children 1) ExpressionList (children 3) Literal Array_[UInt64_1, UInt64_2] Literal Array_[UInt64_1, UInt64_3] Literal Array_[UInt64_2, UInt64_3]