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sed use case: Filter without editing
if we want to filter with sed pattern and just print the filtered lines without any further editing , we can do it like thisls -a1 ~ | sed -ne "/^\./p...
分类:其他好文   时间:2014-05-28 22:58:56    阅读次数:294
关于<s:select> 标签
struts2的select标签中,常用的有以下几个属性:(1)struts2中的select 标签中,必须设置的属性只有一个,即是list。(2)select标签的list中必须有值,不然会报错。如果没有值,可以加上headerKey, headerValue,这样就可以通过了。如:xml 代码 ...
分类:其他好文   时间:2014-05-28 21:54:49    阅读次数:319
mysql语句
1:查找某个字段相同select * from orders where serial_number in (select serial_number from ordersgroup by serial_numberhaving count(serial_number) > 1)
分类:数据库   时间:2014-05-28 19:51:21    阅读次数:386
Yii查询count()
BsCapters::model()->findAllBySql("select count(*) as bookids from bs_capters where bookid = ".$bookid." and urlid = ".$urlid)count(*) as xxx这个xxx必须是表里...
分类:其他好文   时间:2014-05-28 11:32:16    阅读次数:275
[leetcode]Climbing Stairs @ Python
原题地址:https://oj.leetcode.com/problems/climbing-stairs/题意:You are climbing a stair case. It takesnsteps to reach to the top.Each time you can either cl...
分类:编程语言   时间:2014-05-28 03:27:49    阅读次数:267
SQL Server 游标使用
/*** 游标的使用 讲了这个多游标的优点,现在我们就亲自来揭开游标的神秘的面纱。 使用游标的顺序: 声名游标、打开游标、读取数据、关闭游标、删除游标。 1.3.1声明游标 最简单游标声明:DECLARE CURSOR FOR; 其中select语句可以是简单查询,也可以是复杂的接连查询和嵌套查.....
分类:数据库   时间:2014-05-28 02:39:30    阅读次数:295
oracle 杀死被锁进程
Oracle杀死死锁进程先查看哪些表被锁住了:select b.owner,b.object_name,a.session_id,a.locked_modefrom v$locked_object a,dba_objects bwhere b.object_id = a.object_id;OWNE...
分类:数据库   时间:2014-05-28 02:21:13    阅读次数:399
mysql 常用
1.复制表 create table t2 like t1; insert into t2 select * from t1;2.索引 a. ALTER TABLE 用来创建普通索引,UNIQUE 索引和 PRIMARY KEY 索引 ALTER TABLE table_name ADD...
分类:数据库   时间:2014-05-28 01:29:48    阅读次数:335
Sequence用堆排序
DescriptionGiven m sequences, each contains n non-negative integer. Now we may select one number from each sequence to form a sequence with m integers...
分类:其他好文   时间:2014-05-28 00:05:22    阅读次数:298
Limestone all become the right products
Aggregate production is the basic raw material for the building, only select those high standards and high qualified aggregate to build a hundred year...
分类:其他好文   时间:2014-05-27 16:26:36    阅读次数:257
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