SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayFill (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function not (children 1)
         ExpressionList (children 1)
          Function isNull (children 1)
           ExpressionList (children 1)
            Identifier x
      Literal Array_[UInt64_1, NULL, UInt64_3, UInt64_11, UInt64_12, NULL, NULL, UInt64_5, UInt64_6, UInt64_14, NULL, NULL]