SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function CAST (children 1)
     ExpressionList (children 2)
      Function CAST (children 1)
       ExpressionList (children 2)
        Function toUInt32 (children 1)
         ExpressionList (children 1)
          Literal UInt64_2
        Literal \'Bool\'
      Literal \'UInt8\'
