1
我想刪除由該選擇查詢返回的任何東西:從sql server 2000中選擇刪除?
SELECT u.*
FROM (
SELECT userName, groupId, MAX(userId) AS maxId
FROM userTable
where userName <> '' and userName is not null
GROUP BY
userName, groupId
HAVING COUNT(*) > 1
) q
JOIN userTable u
ON u.userName = q.userName
AND u.groupId= q.groupId
AND u.userId <> q.maxId)
我怎樣才能做到這一點?
+ 1這是一種更優雅的方式 –