面试一:select * from student where s# like '%06%'
select substring(s#,1,1)from student
面试二:如何知道一段代码的效率和如何使线程不占CPU100%(c#)
工作无聊投下简历去面试笔试没通过。看来不能玩游戏了。多看书练下基础...
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面试题
面试一:select * from student where s# like '%06%' select substring(s#,1,1)from student 面试二:如何知道一段代码的效率和如何使线程不占CPU100%(c#) 工作无聊投下简历去面试笔试没通过。看来不能玩游戏了。多看书练下基础...
update sale set bounds=b.bounds
from (select id,sum(amount*price*0.05) bounds from product group by id)b where sale.id=b.id
select *from sale
是ROY_888教我写出的