SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toDecimal32 (children 1)
     ExpressionList (children 2)
      Function toDecimal32 (children 1)
       ExpressionList (children 2)
        Literal \'12345678\'
        Literal UInt64_1
      Literal UInt64_3