ORA-19011 in oracle中的选择

Question

我有一条选择语句会引发错误

ORA-19011：字符串缓冲区太小

选择如下

SELECT Substr(Rtrim (Xmlagg (Xmlelement (e, Concat(message_text, ' '))).extract 
                     ( 
                            '//text()'), 
                            ' '), 0, 256) message_text, 
       mobile_number, 
       tran_date, 
       parent_tran_acct_no 
FROM   custom.mobee_push_sms_drc 
WHERE  bank_id = '43' 
       AND status = 'A' 
       AND mobile_number <> '243' 
       AND mobile_number LIKE '243%' 
GROUP  BY mobile_number, 
          tran_date, 
          parent_tran_acct_no 

请帮助更正该SQL。

Answer 1

似乎您缺少GetClobVal：