mysql中随机提取数据库记录
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select * from tablename order by rand() limit 10
sqlserver中随机提取数据库记录
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select top 10 * from tablename order by NEWID()
Access中随机提取数据库记录
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SELECT top 10 * FROM tblTable ORDER BY Rnd(FId)
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select top 10 * from gwzn order by rnd(-1*ID + time()) //个人认为的写法