摘要:
1. 增加字段 flag2. 标记不需要删除的记录UPDATEUsersSET flag = 1FROM (SELECT MAX(UserId) AS userid FROM Users AS Users_1 GROUP BY UserName) AS a INNER JOIN Users ON Users.UserId = a.userid3.删除记录DELETE FROM users WHER... 阅读全文
posted @ 2006-11-13 15:57
海潮的博客
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