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SQL Server生成自增序号
2022-07-06 14:28:00 【枫叶梨花】
在对接其他系统的SQL Server的数据表的时候,有些表没有主键,然后需要产生一个自增序号。然后使用以下方式
select ROW_NUMBER() OVER(ORDER BY GETDATE()) as xh from test
ROW_NUMBER() OVER(ORDER BY GETDATE())
可以对时间进行分组及排序,执行后将会产生结果集,select会对这些结果集进行编号(每一个结果集都从1开始编号)。
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