在 oracle 中将旧式联接转换为 ansi 联接

Question

我有一个巨大的 sql，它是用旧式连接代码编写的，我正在尝试将其更改为 ansi 连接，我没有粘贴选择查询，只是粘贴连接条件以方便使用 ansi join 不会产生任何数据，但旧的会产生。

这是我的旧式加入

 select *****       
 from CHECKING_EXT_CASH_FLW_REP CS, OTP_ALL_REP TP_REP ,
 (select M_LABEL,min(M_ALT_ID) as M_ALT_ID from ING_ALIAS_REP where M_ALT_SYS=@CtpAlternateSystem:C group by M_LABEL) CA,
 (select M_LABEL,min(M_ALT_ID) as M_ALT_ID from ING_ALIAS_REP where M_ALT_SYS=@PtfAlternateSystem:C group by M_LABEL) PA
 where TP_REP.M_REF_DATA=CS.M_REF_DATA
 and TP_REP.M_TP_PFOLIO=CS.M_TP_PFOLIO
 and TP_REP.M_NB=CS.M_NB
 and CA.M_LABEL(+)=TP_REP.M_TP_CNTRPID
 and PA.M_LABEL(+)=TP_REP.M_TP_PFOLIO 
 and CS.M_F_OBSCOM ='N' 

我尝试将其转换为 ansi join，下面是代码

 select **********
 from OTP_ALL_REP TP_REP  
    JOIN  CHECKING_EXT_CASH_FLW_REP CS ON  (TP_REP.M_REF_DATA=CS.M_REF_DATA and TP_REP.M_TP_PFOLIO=CS.M_TP_PFOLIO and TP_REP.M_NB=CS.M_NB )
    RIGHT OUTER JOIN (select M_LABEL,min(M_ALT_ID) as M_ALT_ID from ING_ALIAS_REP where M_ALT_SYS=@CtpAlternateSystem:C group by M_LABEL) CA ON( CA.M_LABEL=TP_REP.M_TP_CNTRPID )
    RIGHT OUTER JOIN (select M_LABEL,min(M_ALT_ID) as M_ALT_ID from ING_ALIAS_REP where M_ALT_SYS=@PtfAlternateSystem:C group by M_LABEL) PA ON (PA.M_LABEL=TP_REP.M_TP_PFOLIO)

旧代码有效，但后者无效，是否有任何我遗漏的内容，或者我的转换有问题。

Answer 1

在我看来，LEFT (outer) JOIN 可能会胜任这项工作（而不是 RIGHT 一个）。

Answer 2

我很确定这是您想要的逻辑：

 select *****       
 from OTP_ALL_REP TP_REP join
      CHECKING_EXT_CASH_FLW_REP CS
      on TP_REP.M_REF_DATA = CS.M_REF_DATA and
         TP_REP.M_TP_PFOLIO = CS.M_TP_PFOLIO
         TP_REP.M_NB = CS.M_NB left join
      (select M_LABEL, min(M_ALT_ID) as M_ALT_ID
       from ING_ALIAS_REP
       where M_ALT_SYS = @CtpAlternateSystem:C
       group by M_LABEL
      ) CA
      on CA.M_LABEL = TP_REP.M_TP_CNTRPID left join
      (select M_LABEL, min(M_ALT_ID) as M_ALT_ID
       from ING_ALIAS_REP
       where M_ALT_SYS = @PtfAlternateSystem:C
       group by M_LABEL
      ) PA
      on PA.M_LABEL = TP_REP.M_TP_PFOLIO
where CS.M_F_OBSCOM = 'N' ;