云数据库RDS SQLServer版sql 的相关内容

文章 2017-11-27 来自：开发者社区

SQL Server 2012入门T-SQL基础篇:(3)select语句和from语句

(1)打开SQL Server Management Studio,点击"新建查询"并在上下文菜单中选择"AdventureWorksDW2012"作为首选的数据库; (2)在新建的查询中输入"select * from dbo.DimEmployee",然后点击"F5"或者点击菜单栏中的"!执行"; (3)可以从结果中看的出来,"select"表示要选择查看哪些字段;"*"表示查询的...

文章 2017-11-27 来自：开发者社区

SQL Server 2012入门T-SQL基础篇:(6)Group By子句和Having子句

Group by 表示对查询结果按照某个或者多个字段进行分组;Having子句一般用来对Group by分组查询结果进行条件限定;其基本语法为: Group by 字段名 Having 条件表达式注意:Group by 通常和聚合函数一起使用,例如:MAX(),MIN(),COUNT(),SUM(),AVG()等我们以count()函数来举例来说明其用法: (1)先进行常规查询: (2...

文章 2017-11-27 来自：开发者社区

SQL Server 2012入门T-SQL基础篇:(5)order by子句

Orderby子句用来定义返回数据的排列顺序; 默认情况下,查询输出的结果通常按照SQLServer一最低开销收集的;例如,按照表的物理储存顺序输出,或者按照SQLServer用于查找数据的索引的顺序输出; 举个例子: (1)当我们默认输出结果时,它按照默认的主键(EmployeeKey)索引顺序排列: (2)如果按照我们自定义以"ParentEmplyeeKey"列来排序查询结果; 我们看...

文章 2017-11-27 来自：开发者社区

SQL Server 2012入门T-SQL基础篇:(8)Delete语句

基本的语法格式如下: Deleteform表名 [where条件语句] 此语句将删除表的部分或者全部记录; (1)带WHERE条件子句,将删除符合条件的记录: 可以看到已经删除了"EmployeeKey=1"的记录; (2)不带条件的delete的语句,将表中删除所有记录; 本文转自 bannerpei 51CTO博客，原文链接：http://blog.51cto.com/28181...

文章 2017-11-27 来自：开发者社区

SQL Server 2012入门T-SQL基础篇:(7)Where子句与Having子句的区别

Where子句与Having子句都是用来过滤数据的,但是二者有什么区别呢? (1)Having用在数据分组之后进行过滤,是用来选择分组的; (2)Where在分组之前进行过滤数据; 值得注意的是,Where排除的数据记录不再包括在分组中; 本文转自 bannerpei 51CTO博客，原文链接：http://blog.51cto.com/281816327/1307133，如需转载请自行...

文章 2017-11-27 来自：开发者社区

SQL Server 2012入门T-SQL基础篇:(10)UPDATE语句

UPDATE语句语法: Update表名 set字段1=字段值,字段2=字段值,字段3=字段值,字段3=字段值,,,,字段n=字段值 where条件语句 (1)不带条件的时候,修改表中所有的记录; (2)修改指定的记录; 本文转自 bannerpei 51CTO博客，原文链接：http://blog.51cto.com/281816327/1307950，如需转载请自行联系原作者

文章 2017-11-27 来自：开发者社区

SQL Server基础二之彻底卸载SQL Server 2008 R2

1、停止所有服务在服务管理器里停止所有SQL相关的服务 2、在控制面板中卸载所有与sql server 2008相关的程序最好最后卸载Micresoft SQL Server 2005 R2 3、用Windows Clear UP卸载SQL 2008组件点击下载Windows Clear UP 4、清除注册表信息卸载Microsoft Search 服务，还需要删除：HKEY_LOC...

文章 2017-11-26 来自：开发者社区

SQL Server 2008 新增T-SQL 简写语法

1.定义变量时可以直接赋值 DECLARE @Id int = 5 2.Insert 语句可以一次插入多行数据 INSERT INTO StateList VALUES(@Id, 'WA'), (@Id + 1, 'FL'), (@Id + 2, 'NY') 3.支持+=操作符 SET StateId += 1 完整示例如下： view plaincopy to clipboardprint?C....

文章 2017-11-26 来自：开发者社区

SQL Server 2014 日志传送部署（5）：通过T-SQL命令来部署日志传送

13.2.5 通过T-SQL命令来部署日志传送 SQL Server还提供以T-SQL命令方式来部署日志传送。在上一个章节中当完成步骤（6）或者（8）后，可保存生成的命令脚本。这个脚本命令结果和在Management Studio中操作的结果是等价的，此命令脚本也可以使用在用户在灾难恢复方案中更快速的重新部署日志传送。得到的命令脚本（带监视服务器）： -- 在主服务器上执行下列语句，以便为数.....

文章 2017-11-26 来自：开发者社区

SQLServer 2005 XML 在 T-SQL 查询中的典型应用[转]

前言: 此文只讲xml数据类型及相应的一些操作方法在解决日常T－SQL编程中的一些应用，而避开xml modify,xml schema,xml索引,命名空间等这些语法性或者生硬的一些问题(这些语法您可以查联机丛书),即此文主要讲以xml的一些操作特性及xquery去解决编程问题.Tags: xquery ,FLWOR迭带 ,sql:column ,sql:varia...

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云数据库 RDS SQL Server 版

云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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