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sql - ORA-00913: oracle 子查询中的值太多

问题描述

我需要捕获所有提供给候选人的工作机会以及候选人最终被录用的职位。我创建了两个单独的查询，一个捕获所有报价，一个子查询仅捕获每个候选人最终被聘用的工作。当我结合两个查询时出现问题，我得到 ORA-00913: too many values。有什么建议么？

SELECT DISTINCT h.pi_candidate_num,
                h.parent_pi_number,
                h.associate_name,
                j.job_family_name,
                j.organization_name,
                j.title,
                e.contest_number,
                e.pi_his_itm_app_trk_creation_dt offer_date
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  e.pi_his_itm_app_trk_creation_dt IN
       (SELECT DISTINCT e.pi_his_itm_app_trk_creation_dt
        FROM   wc_application_event_f e
        INNER  JOIN wc_hired_interns_fa h
        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  j.job_family_name IN ('MDP', 'ELP', 'Emerging Leader Program', 'Other')
        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 Program for Eligible Summer Interns', 'Student Ambassador'))
AND    j.title IN (SELECT *
                   FROM   (SELECT DISTINCT j.title full_time_detail,
                                           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
                           AND    j.job_family_name IN ('MDP', 'ELP', 'Emerging Leader Program', 'Other')
                           AND    e.pi_his_itm_app_trk_sts_name = 'Hired - External'
                           AND    e.pi_his_itm_app_trk_step_name = 'Hire'
                           AND    j.title NOT IN ('Student Ambassador Program for Eligible Summer Interns', 'Student Ambassador'))
                   WHERE  rowrank = 1);

标签： sqloracleoracle11g

解决方案

眼前的问题似乎是这部分：

...
  AND J.TITLE IN (
    SELECT * FROM (
      SELECT DISTINCT J.TITLE FULL_TIME_DETAIL,
        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
...

这SELECT *意味着子查询返回两个列值，FULL_TIME_DETAIL并且ROWRANK. 不过，您实际上并不想要ROWRANK那里，因此将 更改为*您想要的列：

...
  AND J.TITLE IN (
    SELECT FULL_TIME_DETAIL FROM (
      SELECT DISTINCT J.TITLE FULL_TIME_DETAIL,
        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
...

您正在执行大量子查询并重复大量代码，因此这可能会大大简化；也许研究分析函数。不过，这超出了这个问题和具体错误的范围。

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