SQL数据库的相关内容

文章 2012-10-17 来自：开发者社区

SQL Server数据库表锁定原理以及如何解除表的锁定

转自http://www.cnblogs.com/changbluesky/archive/2010/06/10/1753021.html 1. 数据库表锁定原理 1.1 目前的C/S,B/S结构都是多用户访问数据库,每个时间点会有成千上万个user来访问DB,其中也会同时存取同一份数据,会造成数据的不一致性或者读脏数据. 1.2 事务的ACID原则 1.3 锁是关系数...

文章 2012-10-13 来自：开发者社区

获取SQL数据库中的数据库名、所有表名、所有字段名、列描述

1.获取所有数据库名:     (1)、Select Name FROM Master.dbo.SysDatabases orDER BY Name 2.获取所有表名:    (1)、Select Name FROM SysObjects Where XType='U' orDER BY Name   &nb...

文章 2012-08-05 来自：开发者社区

Java操作SQL Server数据库

//首先导入sql server2008的jar包：sqljdbc4.jar，注意在一般的电脑上即使做了这样的操作仍然是吧不能连接上SQL Server 2008的，如果想连上SQL SQLSERVER2008还要做一下配置：请看博文：http://hi.baidu.com/1032610746/item/a1a84d086a9225e43599023f 和&n...

文章 2012-06-24 来自：开发者社区

sql语句查询数据库中的表名/列名/主键/自动增长值

----查询数据库中用户创建的表 ----jsj01 为数据库名 select name tablename from jsj01..sysobjects where type='U' and name not in ('dtproperties') --查询表里的字段信息 exec sp_help  对象名 ---docs为表名 ---- select * from syscolumn...

文章 2012-04-16 来自：开发者社区

SQL2005附加数据库提示——版本为655，无法打开，此服务器支持611版本

错误提示：数据库StudentDB的版本为 655，无法打开。此服务器支持 611 版及更低版本。不支持降级路径。原因：版本655指的是SQL2008, 版本611指的是SQL2005, (还有一个版本539指的是SQL2000) 楼主的情况属于典型的从高版本降低至低版本使用的情景。按微软的官方说法, 是不支持从高版本附加到低版本的。 ...

文章 2012-03-29 来自：开发者社区

关于SQL Server数据库设计的感悟（转）

本文转载:http://www.cnblogs.com/leonbao/archive/2008/03/07/1094821.html

文章 2012-03-27 来自：开发者社区

oracle（PL/SQL）表操作：创建表时检查数据库是否存在该表，若存在删除再创建

Technorati 标签: 在PL/SQL中创建表之前判断表是否存在如果有就删除表的执行语句的书写由于才开始使用PL/SQL来进行Oracle的客户端操作，由于以前使用sql 2005 来执行“创建表之前判断表是否存在如果有就删除表，再创建”的操作语句非常简单： 1: if exists ( 2: select * from sysobjec...

文章 2012-02-27 来自：开发者社区

数据库行转列的sql语句(zt)

转载：http://www.cnblogs.com/Charles2008/archive/2008/03/04/1090162.html 问题描述假设有张学生成绩表(CJ)如下 Name Subject Result 张三语文 80 张三数学 90 张三物理 85 李四语文 85 李四数学 92 李四物理 82 现在想写 sql 语句 ...

文章 2012-02-16 来自：开发者社区

[20120216]查看数据库整体性能问题sql语句.txt

http://dbatrain.wordpress.com/2010/11/22/do-you-have-an-oracle-background/从这个blog获得这个sql语句，通过这个查询到生产系统数据库一个seqence没有设置好。/* Formatted on 2012/02/16 09:45 (Formatter Plus v4.8.8) */column value format ....

问答 2012-02-05 来自：开发者社区

阿里云主机支持MS SQL 数据库吗

阿里云主机支持MS SQL 数据库吗如题

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