加入oracle遊標

Question

我想在oracle遊標中使用連接，它是失敗的。任何人都可以給我一些幫助，以解決光標下面的問題。是否有可能在oracle遊標中使用連接？

CURSOR items_cursor IS 
    SELECT a.*, b.* FROM 
    (SELECT DataId, Name, VersionNum, OwnerId, SubType, LEVEL Lev FROM DTree 
     START WITH ParentId = 2000 CONNECT BY PRIOR DataId= ABS(ParentId) 
    )a, 
    (     
    SELECT o.DataId, o.Permissions OwnerPerm, p.Permissions PublicPerm FROM DTreeAcl o, DTreeAcl p WHERE 
    o.DataId=p.Dataid AND o.AclType=1 AND p.AclType=3 AND (o.Permissions != 130 OR p.Permissions != 36995) 
    )b   
    WHERE a.Lev >= 1 AND a.Lev <= 3 AND a.DataId = b.DataId; 

上面的查詢工作正常，沒有光標。

這個遊標然後在for循環中使用。

BEGIN     
FOR item IN items_cursor LOOP 
rowCnt := rowCnt + 1; 
    -- Some update and insert stmts    
IF rowCnt = 1000 THEN 
    COMMIT;rowCnt := 0; 
END IF;    
END LOOP;  

這裏是我的全部程序代碼..

CREATE OR REPLACE PROCEDURE "RMNAUSR"."PERMS_UPDATE_UPTO_LEVEL3" IS 
rowCnt INT := 0; 
ownerPerm INT := 130; 
publicPerm INT := 36995; 
permUpdated BOOLEAN:= FALSE; 
excludeSubTypes VARCHAR(30) := '201,202,203'; 

CURSOR items_cursor IS 
     (SELECT a.*, b.* FROM 
     (SELECT DataId, Name, VersionNum, OwnerId, SubType, LEVEL Lev FROM DTree 
      START WITH ParentId = 2000 CONNECT BY PRIOR DataId= ABS(ParentId) 
     )a, 
     (     
     SELECT o.DataId, o.Permissions OwnerPerm, p.Permissions PublicPerm FROM DTreeAcl o, DTreeAcl p WHERE 
     o.DataId=p.Dataid AND o.AclType=1 AND p.AclType=3 AND (o.Permissions != 130 OR p.Permissions != 36995) 
     )b   
     WHERE a.Lev >= 1 AND a.Lev <= 3 AND a.DataId = b.DataId); 

BEGIN     
     FOR item IN items_cursor LOOP 
      rowCnt := rowCnt + 1; 
      permUpdated := FALSE; 
       -- some insert and update stmts here 
      IF rowCnt = 1000 THEN 
        COMMIT; 
        rowCnt := 0; 
      END IF;    
     END LOOP; 

     COMMIT; 
     EXCEPTION WHEN OTHERS THEN raise_application_error(-20001,SQLERRM); 
END PERMS_UPDATE_UPTO_LEVEL3; 

在Adavance謝謝！ Arun

Answer 1

您將有兩列從名稱爲DATAID的查詢中投影 - 嘗試別名之一的別名。