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 toDecimal32 (children 1)
         ExpressionList (children 2)
          Literal UInt64_2
          Literal UInt64_2
        Literal \'Bool\'
      Literal \'UInt8\'
