SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function arrayEnumerateUniq (children 1)
     ExpressionList (children 1)
      Literal Array_[UInt64_1, UInt64_2, UInt64_3, UInt64_1, UInt64_2]
    Function arrayEnumerateDense (children 1)
     ExpressionList (children 1)
      Literal Array_[UInt64_1, UInt64_2, UInt64_3, UInt64_1, UInt64_2]