sql - 连接语句中的 "ORA-00932: inconsistent datatypes: expected - got BLOB"错误

我在执行以下存储过程时遇到问题。
添加时出现ORA-00932: inconsistent datatypes: expected - got BLOB错误
下面的存储过程中的FM.FAXFILE_BLOB列。 FAXFILE_BLOB是一个blob字段。如果我删除此字段，则一切正常，我不知道为什么会这样。请帮助....

        CREATE OR REPLACE Procedure HCADMIN.Proc_GetFaxDetailsByDate
         (
           FromDate varchar2 default null,
           ToDate varchar2 default null,
           FaxNo varchar2 default null,
           ClaimNo varchar2 default null,
            NspCode varchar2 default null,
           PolicyNo varchar2 default null,
           HEGICNo varchar2 default null,
           cur_faxdetails OUT SYS_REFCURSOR
           )
        IS
       BEGIN
      OPEN cur_faxdetails For

      Select distinct
       FM.RECORDNO_NUM,
       FM.CLAIMNO_VAR,
       FM.FAXNO_VAR,
       FM.FAXSTATUS_VAR,
       FM.FAXTYPE_VAR,
       FM.USERNAME_VAR,
       FM.HEGIC_NO_VAR,
       FM.RESEND_NO_NUM,
       FM.RESNDCOUNT_NUM,
       TO_date(FM.TIMESTAMP_DTE,'dd/MM/yyyy') as "TIMESTAMP_DTE",
       FR.RECIPIENTFAXNO_VAR,
       FM.FAXFILE_BLOB

       From TPA_FAXMASTER FM Left  join TPA_FAXRECIPIENT FR on                                      FM.RECORDNO_NUM=FR.RECORDNO_NUM
 WHERE
      NVL(FM.FAXNO_VAR,'0')=NVL(FaxNo,NVL(FM.FAXNO_VAR,'0')) And
      NVL(FR.RECIPIENTFAXNO_VAR,'0')=NVL(FaxNo,NVL(FR.RECIPIENTFAXNO_VAR,'0')) And
      NVL(FM.CLAIMNO_VAR,'0')=NVL(ClaimNo,NVL(FM.CLAIMNO_VAR,'0')) And
      NVL(FM.NSPID_VAR,'0')=NVL(NspCode,NVL(FM.NSPID_VAR,'0')) And
      NVL(FM.POLICYNO_VAR,'0')=NVL(PolicyNo,NVL(FM.POLICYNO_VAR,'0')) And
      NVL(FM.HEGIC_NO_VAR,'0')=NVL(HEGICNo,NVL(FM.HEGIC_NO_VAR,'0')) And
      (NVL(TO_date(FM.TIMESTAMP_DTE,'dd/MM/yyy'),To_Date('09/09/9999','dd/MM/yyyy'))
      BETWEEN NVL (TO_date(FromDate,'dd/MM/yyyy'), NVL(TO_date(FM.TIMESTAMP_DTE,'dd/MM/yyy'),To_Date('09/09/9999','dd/MM/yyyy')))
      AND  NVL (TO_date(ToDate,'dd/MM/yyyy'), NVL(TO_date(FM.TIMESTAMP_DTE,'dd/MM/yyy'),To_Date('09/09/9999','dd/MM/yyyy'))));
EXCEPTION
 WHEN NO_DATA_FOUND THEN
   Null;
 WHEN OTHERS THEN
   -- Consider logging the error and then re-raise
   RAISE;
 END;
 /

最佳答案

如果select_list包含LOB列，则不能指定DISTINCT。

尝试使用标量子查询来获取BLOB字段。

关于sql - 连接语句中的 "ORA-00932: inconsistent datatypes: expected - got BLOB"错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/9357974/