我创建了一个查询来删除 MariaDB 中的一些记录
询问 :
DELETE
FROM
HrAttLogsFormatted
WHERE
DateIn = '2019-04-10'
AND Late != ''
AND ( FingerId, CreatedDate ) IN (
SELECT
FingerId,
MAX( CreatedDate )
FROM
HrAttLogsFormatted
WHERE
DateIn = '2019-04-10'
AND Late != ''
AND FingerId IN ( SELECT FingerId FROM HrAttLogsFormatted WHERE DateIn = '2019-04-10' AND Late != '' GROUP BY FingerId HAVING COUNT( FingerId ) > 1 )
GROUP BY
FingerId
)
结果 :
表“HrAttLogsFormatted”被指定了两次,既作为“DELETE”的目标,又作为数据的单独源
但是我的查询失败了,有没有办法解决呢?
先感谢您
[EDIT-SOLVED] 只需应用和查询即可解决
DELETE t1
FROM HrAttLogsFormatted t1
INNER JOIN
(
SELECT FingerId, MinCreatedDate
FROM
(
SELECT FingerId, MIN(CreatedDate) AS MinCreatedDate
FROM HrAttLogsFormatted
WHERE DateIn = '2019-05-03' AND Late != ''
GROUP BY FingerId HAVING COUNT(FingerId) > 1
) x
) t2
ON t1.FingerId = t2.FingerId AND t1.CreatedDate = t2.MinCreatedDate;