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2011年9月14日
统计sql语句改造 (当sign_date不为空时，用sign_date升序排列，当sign_date为空时， 用issu_date升序排列)
摘要： select * from (select '2011-09-14' as sign_date,'2011-09-01' as issu_dateunionselect '2011-09-10' as sign_date,'2011-09-05' as issu_dateunionselect '2011-09-12' as sign_date,'2011-09-02' as issu_dateunionselect '' as sign_date,'2011-09-04&# 阅读全文
posted @ 2011-09-14 17:28 歪头儿在北京 阅读(894) 评论(0) 推荐(0)