sql (批量)生成隨機數據

sql生成隨機數

select  rand() as 隨機數

select cast(floor(rand()*10) as int) as 隨機數

 update語句結合case when 語句

UPDATE mytable SET 
myfield = CASE id 
        WHEN 1 THEN 'value'
        WHEN 2 THEN 'value'
        WHEN 3 THEN 'value'
END 

當這兩者結合之后，產生了奇妙的化學反應正好解決了sql生成隨機數據的需求