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Html.DropDownList 选中 mvc view 弱类型
List listGroup = sysGroupBll.Where(o => o.IsSb == true, o => o.Id).ToList(); List items = new List(); foreach (var group in listGroup) { items.Add(new...
分类:Web程序   时间:2014-05-16 03:30:39    阅读次数:401
SQL判断是否存在符合某条件的记录
IF EXISTS ( --判断是否存在合符条件的记录 SELECT TOP ( 1 ) 1 FROM [DCL].[SecurityUser] WHERE [U...
分类:数据库   时间:2014-05-15 20:51:00    阅读次数:336
sql 语句 插入结果为select 和值混合
String slctpsql="select id ,"+uid+","+ddd+","+score+",'"+mark+"' ,"+markid+" ,"+exam.getId()+" from Test_Paper where testBaseId=(select id from Test_Base where baseTestId="+judgemap.get(i).getId()+" a...
分类:数据库   时间:2014-05-15 20:36:45    阅读次数:434
HDU 2795 Billboard (RE的可以看一看)
Problem Description At the entrance to the university, there is a huge rectangular billboard of size h*w (h is its height and w is its width). The board is the place where all possible announcement...
分类:其他好文   时间:2014-05-15 19:48:31    阅读次数:348
sql dateDiff函数
当月的数据select * from MOPICK where dateDiff(m,getdate(),START_DATE)=0
分类:数据库   时间:2014-05-15 11:37:10    阅读次数:562
Oracle外键不加索引引起死锁
--创建一个表,此表作为子表 create table fk_t as select *from user_objects; delete from  fk_t where object_id is null; commit; --创建一个表,此表作为父表 create table pk_t as select *from user_objects; delete from  p...
分类:数据库   时间:2014-05-15 11:17:07    阅读次数:248
SQLServer行转列
最近面试遇到了一道面试题,顿时有点迷糊,只说出了思路,后来百度了一下,整理了一下思路,于是记录下来,方便以后学习。(面试题请参见附件) 相关的数据表: 1.Score表 2.[User]表 SQL语句如下: --方法一:静态SQL SELECT * FROM (SELECT UID,Name, Score,ScoreName FROM Score,[User] WHERE S...
分类:数据库   时间:2014-05-15 05:46:12    阅读次数:296
sql获取每门课程成绩最好的学生信息
1.相关数据表 Score表 [User]表 SQL语句如下: --查询出各科成绩最好的学生信息 --自连接 --SELECT TOP 1 * FROM Score B WHERE B.ScoreName = '数学' ORDER BY B.Score DESC SELECT A.ID,U.Name,A.ScoreName,A.Score FROM Score A,[Use...
分类:数据库   时间:2014-05-15 05:02:05    阅读次数:477
LeetCode-001 Two Sum
LeetCode-001 Two Sum Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than index2...
分类:其他好文   时间:2014-05-15 04:34:50    阅读次数:293
SQL中的Truncate Table
SQL中的Delete语句从表中删除一条或多条记录,同时可以给Delete语句提供Where子句,SQL中的Select语句中可以使用的任何条件都可以在DELECT的WHERE子句中使用。Delete语句的语法格式是:DELETE[FROM]{table_name|view_name}[WHEREcondition]。如果不给Delete语句指定Where子句,..
分类:数据库   时间:2014-05-14 17:33:44    阅读次数:332
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