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delete top(1) from Tb_PaintOut where PaintNumber = (select top (1) PaintNumber from Tb_PaintOut order by PaintOutTime desc)
Tb_PaintOut:表明
PaintNumber:字段名
PaintOutTime:时间类型字段
MSSQL - 根据时间倒序删除第一行数据
原文地址:http://www.cnblogs.com/KTblog/p/4595284.html