導讀:1建站知識order by newid() 各種數(shù)據(jù)庫隨機查詢的方法，需要的朋友可以參考一下網(wǎng)站優(yōu)化seo培訓網(wǎng)站seo優(yōu)化軟件。

SQL Server：

復制代碼 代碼如下:

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()函數(shù)將創(chuàng)建一個 uniqueidentifier 類型的唯一值。上面的語句實現(xiàn)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) 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是自動編號字段，可以利用其他任何數(shù)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)) view plaincopy to clipboardprint?Select TOP N * From TABLE Order BY Rnd(Len(UserName))

Select TOP N * From TABLE Order BY Rnd(Len(Use網(wǎng)站推廣優(yōu)化seorName))

MySql：

復制代碼 代碼如下:

Select企業(yè)網(wǎng)站建設 * F建設網(wǎng)站rom 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：

復制代碼 代碼如下:

select * from glxt022 order by random() limit 5 view plaincopy to clipboardprint?select * from glxt022 order by random() limit 5

相關網(wǎng)站優(yōu)化seo培訓網(wǎng)站seo優(yōu)化軟件。

關鍵詞標簽: 標簽 數(shù)據(jù)庫