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夜雨离风
发布于 2013-07-02 14:58
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复制代码 代码如下:SELECT *FROM ( SELECT userid, classid, remark, ROW_NUMBER () OVER ( PARTITION BY userid, classid ORDER BY addtime DESC ) AS row_bank FROM Eng24VIPCourseIntention ) AS taWHERE row_bank = 1=========================..
