Sql Rank（）超过（oracle返回1条记录的分区）

我需要调出每个应聘者被录用的职位名称，因为在某些情况下，应聘者可以被录用，然后被取消录用。我使用秩函数来确保我只选择我们雇佣的最后一份工作。问题是，当我确定我有多个r时，我的查询只返回一条记录这是我正在使用的oracle代码

SELECT E.PI_CANDIDATE_NUM,
       J.TITLE,
       RANK() OVER(PARTITION BY E.PI_CANDIDATE_NUM
          ORDER BY E.PI_HIS_ITM_APP_TRK_CREATION_DT DESC) AS ROWRANK
  FROM WC_HIRED_INTERNS_FA H
       INNER JOIN WC_APPLICATION_EVENT_F E
        ON H.PI_CANDIDATE_NUM = E.PI_CANDIDATE_NUM
       INNER JOIN WC_JOB_INFORMATION_D J
        ON E.JOB_INFO_ROW_WID = J.ROW_WID
 WHERE     ROWNUM = 1
       AND J.JOB_FAMILY_NAME IN ('M', 'P', 'E', 'O')
       AND E.PI_HIS_ITM_APP_TRK_STS_NAME = 'Extended'
       AND E.PI_HIS_ITM_APP_TRK_STEP_NAME = 'Offer'
       AND J.TITLE NOT IN ('Student Ambassador');

您似乎需要：

SELECT *
FROM 
(
    SELECT E.PI_CANDIDATE_NUM,
           J.TITLE,
           RANK() OVER(PARTITION BY E.PI_CANDIDATE_NUM
              ORDER BY E.PI_HIS_ITM_APP_TRK_CREATION_DT DESC) AS ROWRANK
      FROM WC_HIRED_INTERNS_FA H
           INNER JOIN WC_APPLICATION_EVENT_F E
            ON H.PI_CANDIDATE_NUM = E.PI_CANDIDATE_NUM
           INNER JOIN WC_JOB_INFORMATION_D J
            ON E.JOB_INFO_ROW_WID = J.ROW_WID
     WHERE  -- no conditions on ROWNUM
               J.JOB_FAMILY_NAME IN ('M', 'P', 'E', 'O')
           AND E.PI_HIS_ITM_APP_TRK_STS_NAME = 'Extended'
           AND E.PI_HIS_ITM_APP_TRK_STEP_NAME = 'Offer'
           AND J.TITLE NOT IN ('Student Ambassador')
)
WHERE ROWRANK = 1

您似乎需要：

SELECT *
FROM 
(
    SELECT E.PI_CANDIDATE_NUM,
           J.TITLE,
           RANK() OVER(PARTITION BY E.PI_CANDIDATE_NUM
              ORDER BY E.PI_HIS_ITM_APP_TRK_CREATION_DT DESC) AS ROWRANK
      FROM WC_HIRED_INTERNS_FA H
           INNER JOIN WC_APPLICATION_EVENT_F E
            ON H.PI_CANDIDATE_NUM = E.PI_CANDIDATE_NUM
           INNER JOIN WC_JOB_INFORMATION_D J
            ON E.JOB_INFO_ROW_WID = J.ROW_WID
     WHERE  -- no conditions on ROWNUM
               J.JOB_FAMILY_NAME IN ('M', 'P', 'E', 'O')
           AND E.PI_HIS_ITM_APP_TRK_STS_NAME = 'Extended'
           AND E.PI_HIS_ITM_APP_TRK_STEP_NAME = 'Offer'
           AND J.TITLE NOT IN ('Student Ambassador')
)
WHERE ROWRANK = 1

---

可能是

ROWNUM=1

？这与

rank（）无关

。返回的行数由连接条件和

where

子句决定。在外部查询中，rownum更可能需要是where rowrank=1 ok。我没有意识到，我以为问题是rowrankMaybe

rownum=1

？这与

rank（）无关

。返回的行数由连接条件和

where

子句决定。在外部查询中，rownum更可能是where rowrank=1。好的。我没有意识到，我认为这个问题非常好，解决了我的问题。非常感谢。非常好，解决了我的问题。c谢谢你。