SQL Server：
復制代碼 代碼如下:
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()函數將創建一個 uniqueidentifier 類型的唯一值。上面的語句實現效果是從Table中隨機讀取N條記錄。
Access：
復制代碼 代碼如下:
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是自動編號字段，可以利用其他任何數值來完成，比如用姓名字段(UserName)
復制代碼 代碼如下:
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：
復制代碼 代碼如下:
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：
復制代碼 代碼如下:
select * from glxt022 order by random() limit 5
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select * from glxt022 order by random() limit 5
