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文章 2014-12-03 来自：开发者社区

原文:SQL点滴2—重温sql语句中的join操作 1.join语句 Sql join语句用来合并两个或多个表中的记录。ANSI标准SQL语句中有四种JOIN：INNER，OUTER，LEFTER，RIGHT，一个表或视图也可以可以和它自身做JOIN操作。下面举例说明。下面所举的例子使用的表有Employee和Department，在这两个表中Department.DepartmentID是主键....

文章 2010-08-11 来自：开发者社区

SQL点滴2—重温sql语句中的join操作

1.join语句 Sql join语句用来合并两个或多个表中的记录。ANSI标准SQL语句中有四种JOIN：INNER，OUTER，LEFTER，RIGHT，一个表或视图也可以可以和它自身做JOIN操作。下面举例说明。下面所举的例子使用的表有Employee和Department，在这两个表中Department.DepartmentID是主键，Employee.DepartmentID是外键。....

文章 2008-02-16 来自：开发者社区

温习sql语句中JOIN的各种操作(SQL2005环境)

温习sql语句中JOIN的各种操作(SQL2005环境) 为了方便测试，先建二个基本表T_Employee(员工表)，T_Region(地区表) Sql语句如下: CREATE TABLE [dbo].[T_Employee]( [ID] [int] NULL, [Name] [nvarchar](50) NULL, [RegionID] [int]...

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