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搜索结果
查询Tags标签： minno，共有 1条记录-
MySQL 去重
方式一DELETE FROM t_test WHERE id IN (SELECT * FROM(SELECT MAX(id) did FROM t_test GROUP BY username HAVING COUNT(*) > 1) t);方式二DELETE FROM t_test WHERE id NOT IN (SELECT t.minno FROM (SELECT MIN(id) AS minno FROM t_test GROUP BY username) t…
2021/4/12 2:25:24 人评论 次浏览
