order by newid() 随机查询

概述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 uniqueid

sql Server：

Select top N * From table Order By NewID()
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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)
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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))
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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
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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

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