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浅谈HTML5 & CSS3的新交互特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...显示效果的语言。这时候问题出来了，为什么我们要单独使用CSS呢，HTML不是一样可以控制Web页面的显示效果么？为了回答这个问题，我举个简单的例子：
有没有发现如果一旦形容的事情过多，想要把事情描述清楚的时候，我...
Data access object (DAO) in Java
... have to provide a concrete implementation for that interface to deal with SQL server, and another to deal with flat files, etc.
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C语言之父辞世引发“分号”悼念 - 创意 - 清泛网 - 专注C/C++及内核技术
...后不久，安装了这一程序的PDP-11被放在贝尔实验室供大家使用。有一天，大家发现两位创始人总是可以得到最高的权限轻松进入他们的帐户，在贝尔实验室这种高人云集的地方，这简直是太不能容忍的事情了。于是，若干愤懑的...
T-SQL - function with default parameters
... answered Dec 2 '11 at 15:11
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Simplest way to do a recursive self-join?
What is the simplest way of doing a recursive self-join in SQL Server? I have a table like this:
5 Answers
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Add a column to a table, if it does not already exist
I want to write a query for MS SQL Server that adds a column into a table. But I don't want any error display, when I run/execute the following query.
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Find nearest latitude/longitude with an SQL query
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Google's solution:
Creating the Table
When you create the MySQL table, you want to pay particular attention to the lat and lng attributes. With the current zoom capabilities of Google Maps, you should only need 6 digits of precision after the decimal. To keep the storage space require...
Does Foreign Key improve query performance?
...Keys are a referential integrity tool, not a performance tool. At least in SQL Server, the creation of an FK does not create an associated index, and you should create indexes on all FK fields to improve look up times.
shar...
LINQ to SQL - Left Outer Join with multiple join conditions
I have the following SQL, which I am trying to translate to LINQ:
6 Answers
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Generating a UUID in Postgres for Insert statement?
...default. You must load it into your database to use it.
For modern PostgreSQL versions (9.1 and newer) that's easy:
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
but for 9.0 and below you must instead run the SQL script to load the extension. See the documentation for contrib modules in 8.4.
For...