Question

我想使用子查询来计算proceded_acct_creation应用程序，条件是主查询中的日期等于子查询中的日期，并且子查询中的应用程序ID必须在主查询中。问题是子查询也有很多应用程序ID。

申请人表

id    | name
1     | John Doe
2     | Jane Doe

applicant_remarks表

id    | applicant_id    | status_id    | updated_at
1     | 1               | 2            | 2019-04-10 11:40:12
2     | 2               | 2            | 2019-04-10 11:42:56
3     | 2               | 4            | 2019-04-10 11:46:21

预期输出

GROUP_CONCAT(applicants.id)    | proceeded_acct_creation
1,2                            | 1

我的输出

GROUP_CONCAT(applicants.id)    | proceeded_acct_creation
1,2                            | 0

我已经尝试过了：

SELECT
GROUP_CONCAT(applicants.id),
DATE(remarks.updated_at) AS `date`,
IFNULL(
  (
    SELECT COUNT(*)
    FROM applicant_remarks
    WHERE status_id = 4
    AND DATE(updated_at) = DATE(remarks.updated_at)
    AND applicant_id IN (GROUP_CONCAT(applicants.id))
    GROUP BY DATE(remarks.updated_at)
  ),
    0
) AS proceeded_acct_creation
FROM applicants
INNER JOIN applicant_remarks remarks ON remarks.applicant_id = applicants.id
WHERE remarks.status_id = 2
GROUP BY DATE(remarks.updated_at)
HAVING `date` IS NOT NULL
ORDER BY remarks.updated_at DESC

问题出在这部分：

IFNULL(
  (
    SELECT COUNT(*)
    FROM applicant_remarks
    WHERE status_id = 4
    AND DATE(updated_at) = DATE(remarks.updated_at)
    AND applicant_id IN (GROUP_CONCAT(applicants.id))
    GROUP BY DATE(remarks.updated_at)
  ),
    0
) AS proceeded_acct_creation,

applicant_id IN (GROUP_CONCAT(applicants.id))

必须

GROUP_CONCAT(applicant_id) IN (GROUP_CONCAT(applicants.id))

但返回错误：

Error Code: 1111. Invalid use of group function

条件从多个值到多个值

0 个答案: