Question

鉴于此查询：

SELECT cur.`id`
FROM `current` AS cur
LEFT OUTER JOIN (
    SELECT MAX(EndDay_id.id) as id, EndDay_id.server_id
    FROM current as EndDay_id
    GROUP BY server_id, gameday
    ) AS EndDay
ON cur.id = EndDay.id
WHERE EndDay.id IS null

如何删除表格中的行＆＃39; current＆＃39;其id字段是否在上一个查询的结果集中？

Answer 1

delete current
where id in (SELECT cur.`id`
FROM `current` AS cur
LEFT OUTER JOIN (
SELECT MAX(EndDay_id.id) as id, EndDay_id.server_id
FROM current as EndDay_id
GROUP BY server_id, gameday
) AS EndDay
ON cur.id = EndDay.id
WHERE EndDay.id IS null)

Answer 2

试试这个

DELETE cur FROM `current` AS cur
LEFT OUTER JOIN (
    SELECT MAX(EndDay_id.id) as id, EndDay_id.server_id
    FROM current as EndDay_id
    GROUP BY server_id, gameday
    ) AS EndDay
ON cur.id = EndDay.id
WHERE EndDay.id IS null

我测试了它，这应该有效：http://sqlfiddle.com/#!2/a47c81

SQL根据同一个表中的查询删除行？

2 个答案: