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现有字典表（Dict）
| 字段 | 说明 |
| Id | 标示 |
| ItemKey | 键 |
| ItemValue | 值 |
| UpperId | 上层标示 |
//操作步骤：展开相关表，右击‘触发器’，新建即可
USE [sqlffwj]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[CheckKeyRepeated]
ON [dbo].[Dict]
for INSERT
AS
if(select COUNT(*) from [Dict], inserted inobj where [Dict].ItemKey = inobj.ItemKey and [Dict].Id != inobj.Id) > 0
BEGIN
raiserror(‘已有相同键，不能插入‘,16,1)
rollback tran
END
USE [sqlffwj]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[CheckDependence]
ON [dbo].[Dict]
for delete
AS
if(select COUNT(*) from [Dict], deleted delbj where [Dict].UpperId = delbj.Id) > 0
BEGIN
raiserror(‘有下层记录，不能删除‘,16,1)
rollback tran
END
USE [sqlffwj]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[CheckDependence2]
ON [dbo].[Dict]
AFTER delete
AS
while(select COUNT(*) from [Dict] where UpperId != 0 and UpperId not in (select Id from [Dict])) > 0
BEGIN
delete from [Dict]
where UpperId != 0 and UpperId not in (select Id from [Dict])
END
现有用户表（User）
| 字段 | 说明 |
| Id | 标示 |
| Name | 姓名 |
| Age | 年龄 |
| DeptId | 部门标示 |
部门表（Dept）
| 字段 | 说明 |
| Id | 标示 |
| Name | 名称 |
//操作步骤：展开数据库，再展开可编程性，右击‘存储过程’，新建即可
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[GetUsers]
AS
BEGIN
select [User].Id ‘标示‘,[User].Name ‘姓名‘, [User].Age ‘年龄‘, [Dept].Name ‘部门‘ from [User] left join [Dept] on [User].DeptId = [Dept].Id
END
GO
/* 调用 */ exec GetUsers
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[GetUsersByDept]
(
@deptid int /* 部门标示 */
)
AS
BEGIN
select [User].Id ‘标示‘,[User].Name ‘姓名‘, [User].Age ‘年龄‘, [Dept].Name ‘部门‘
from [User] left join [Dept] on [User].DeptId = [Dept].Id
where [Dept].Id = @deptid
END
GO
/* 调用 */ exec GetUsersByDept 2
1、环境：VS2010+sql2008
2、新建edmx文件，引用两张表和存储过程
3、切换到‘模型浏览器’，‘添加函数导入’
4、在‘添加函数导入’面板，点击‘获取列信息’，获取到列信息后再点击‘创建新的复杂类型’，确定后就可以通过Func调用存储过程了
5、调用代码Demo
using (var context = new SqltestEntities())
{
var result = context.GetUsersByDept(2);
throw new Exception(result.Count().ToString());
}
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原文地址：http://www.cnblogs.com/shouce/p/5147120.html
