Home >Database >Mysql Tutorial >order by newid() 随机查询_MySQL
order by newid() 随机查询_MySQL
- WBOYOriginal
- 2016-06-01 13:48:591128browse
bitsCN.com
SQL Server：
Select TOP N * From TABLE Order By NewID()
view plaincopy to clipboardprint?
Select TOP N * From TABLE Order By NewID()
Select TOP N * From TABLE Order By NewID()
NewID()函数将创建一个 uniqueidentifier 类型的唯一值。上面的语句实现效果是从Table中随机读取N条记录。
Access：
Select TOP N * From TABLE Order By Rnd(ID)
view plaincopy to clipboardprint?
Select TOP N * From TABLE Order By Rnd(ID)
Select TOP N * From TABLE Order By Rnd(ID)
Rnd(ID) 其中的ID是自动编号字段，可以利用其他任何数值来完成，比如用姓名字段(UserName)
Select TOP N * From TABLE Order BY Rnd(Len(UserName))
view plaincopy to clipboardprint?
Select TOP N * From TABLE Order BY Rnd(Len(UserName))
Select TOP N * From TABLE Order BY Rnd(Len(UserName))
MySql：
Select * From TABLE Order By Rand() Limit 10
view plaincopy to clipboardprint?
Select * From TABLE Order By Rand() Limit 10
Select * From TABLE Order By Rand() Limit 10
postgreSQL：
select * from glxt022 order by random() limit 5
view plaincopy to clipboardprint?
select * from glxt022 order by random() limit 5