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Your Job Is Not to Write Code
I am lucky enough to work with a small team of fantastic engineers who truly care about their customers. If you are not that lucky, this letter is for...
分类:其他好文   时间:2014-11-17 15:39:15    阅读次数:158
SQL中EXISTS的用法
比如在Northwind数据库中有一个查询为 SELECT c.CustomerId,CompanyName FROM Customers c WHERE EXISTS( SELECT OrderID FROM Orders o WHERE o.CustomerID=c.CustomerID)  这里面的EXISTS是如何运作呢?子查询返回的是OrderId字段,可是外面的查询要找的是Cu...
分类:数据库   时间:2014-11-14 09:19:20    阅读次数:182
eXtremeDB -- the shared memory 80error
The customers got the shared memory 80error on AIX environment; utility truss is used to track the debug info,eXtremeDB.registry access error is found.  Release notesdescribed as follows: These names ...
分类:数据库   时间:2014-11-10 10:00:31    阅读次数:237
What can I learn right now in just 10 minutes that could be useful for the rest of my life?
1.Primacyandrecency:Peoplemostrememberthefirstandlastthingstooccur,andbarelythemiddle.Whenschedulinganinterview,askwhattimestheemployerisinterviewingandtrytobefirstorlast.2.Ifyouworkinabarorincustomerserviceofanykind……Putamirrorbehindyouatthecounter.Thisw..
分类:其他好文   时间:2014-10-24 11:11:47    阅读次数:374
C# 操作XML学习笔记
1. Customers.xml 1 2 4 5 John 6 Cranston 7 (445) 269-9857 8 9 10 11 Annie12 Loskar13 ...
分类:Windows程序   时间:2014-10-20 14:45:27    阅读次数:245
SQL Exists 的用法 转载
比如在Northwind数据库中 有一个查询为 SELECT c.CustomerId, CompanyName FROM Customers c WHERE EXISTS( SELECT OrderID FROM O...
分类:数据库   时间:2014-10-20 11:27:38    阅读次数:285
Ruby的model学习——Active Record Associations
一、如何定义关联     两个model之间常常会存在关联关系,为了解决这些关联引起的复杂操作问题,可以在model定义时定义其关联关系。如:实体customers和orders定义如下: class Customer   has_many :orders, dependent: :destroy end    class Order...
分类:其他好文   时间:2014-10-16 14:55:32    阅读次数:152
网页顶端显示消息
var cookiename=getCookie("screentopdiv");if (cookiename == "0") { document.write('Dear Customers, your order may will be delayed 1-3 days due to th...
分类:Web程序   时间:2014-10-16 14:00:22    阅读次数:211
【mysql】联合查询
1. 三表联合查询select XX,XX from a , b , c笛卡尔积,等同于cross join4. cross join--列出两边所有组合,也叫笛卡尔集A.Rows * B.Rowsselect *from Sales S cross join Customers C5. inner...
分类:数据库   时间:2014-10-13 19:14:56    阅读次数:209
zencart重置用户登录密码sql
zencart重置用户ID为99的登录密码为aaaaaaaupdate customers set customers_password='1ebf0e689c7d44a19e4d0070ab381f81:52' where customers_id=99;
分类:数据库   时间:2014-10-12 17:52:28    阅读次数:249
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