Question

我正在使用ROWNUM以下列方式获取999行：

SELECT COUNT(*) 
FROM PS_MMC_JOBDSSOA_MV JOB, PS_MMC_PERDSSOA_MV PER 
WHERE PER.EMPLID = JOB.EMPLID AND 
PER.ASOFDATE = (SELECT MAX(PER1.ASOFDATE) FROM PS_MMC_PERDSSOA_MV PER1 
WHERE PER1.EMPLID = PER.EMPLID AND PER1.ASOFDATE <= SYSDATE) AND 
JOB.ASOFDATE = (SELECT MAX(JOB1.ASOFDATE) FROM PS_MMC_JOBDSSOA_MV JOB1 
WHERE JOB1.EMPLID = JOB.EMPLID AND JOB1.ASOFDATE <=SYSDATE) AND ROWNUM<1000;

我使用左外连接重写了上面的sql查询：

SELECT COUNT(*) 
FROM PS_MMC_JOBDSSOA_MV JOB LEFT OUTER JOIN PS_MMC_PERDSSOA_MV PER 
ON (PER.EMPLID = JOB.EMPLID) 
AND PER.ASOFDATE = ((SELECT MAX(PER1.ASOFDATE) FROM PS_MMC_PERDSSOA_MV PER1 WHERE 
PER1.EMPLID = PER.EMPLID AND PER1.ASOFDATE <= SYSDATE) 
AND JOB.ASOFDATE = (SELECT MAX(JOB1.ASOFDATE) FROM PS_MMC_JOBDSSOA_MV JOB1 WHERE 
JOB1.EMPLID = JOB.EMPLID AND JOB1.ASOFDATE <= SYSDATE)) WHERE ROWNUM <1000;

ROWNUM无法使用外部联接。我的行数超过1000行。

有人能说出我做错了吗。

Answer 1

我在下面找到了与ROWNUM一起使用的SQL查询

SELECT * from (SELECT JOB.DEPTID, JOB.EMPL_STATUS, JOB.LOCATION, JOB.MMC_LOCATION_DESCR, JOB.CITY, JOB."STATE", PER."NAME" FROM
PS_MMC_JOBDSSOA_MV JOB LEFT OUTER JOIN PS_MMC_PERDSSOA_MV PER ON (PER.EMPLID = JOB.EMPLID) 
AND PER.ASOFDATE = (SELECT MAX(PER1.ASOFDATE) FROM PS_MMC_PERDSSOA_MV PER1
WHERE PER1.EMPLID = PER.EMPLID AND PER1.ASOFDATE <= SYSDATE) AND JOB.ASOFDATE = 
(SELECT MAX(JOB1.ASOFDATE) FROM PS_MMC_JOBDSSOA_MV JOB1 WHERE JOB1.EMPLID = JOB.EMPLID AND JOB1.ASOFDATE <= SYSDATE)) 
where ROWNUM <1000

ROWNUM不适用于LEFT-OUTER-JOIN

1 个答案: