07 2014 档案
摘要:public sealed class classroom { private List student = new List(); private List student1 = new List(); public List Student ...
阅读全文
摘要:http://blog.csdn.net/RonoTian/article/details/2900714
阅读全文
摘要:从A表随机取2条记录,用SELECT TOP 10 * FROM ywle order by newid()order by 一般是根据某一字段排序,newid()的返回值 是uniqueidentifier ,order by newid()随机选取记录是如何进行的newid()在扫描每条记录的时...
阅读全文
摘要:int32 =intint64 =long1byte=8bitunicode 占2btyeint32 占 1 btyelong 占 4 btye
阅读全文