[译]Stairway to Integration Services Level 5 - 增量删除数据

在 dbo.Contact中添加一行记录

Use AdventureWorks go Insert Into dbo.Contact (FirstName, MiddleName, LastName, Email) Values ('Andy', 'Ray', 'Leonard', 'andy.leonard@gmail.com')

把 Data Flow Task 改名为 “Insert and Update Rows.” 然后再拖一个 Data Flow task 并改名为 “Delete Rows”如下图:

图 3

打开 Delete Rows,添加 OLE DB Source ,配置如下:

OLE DB Connection Manager: (local).AdventureWorks
Data Access Mode: Table or view
Name of the table or view: dbo.Contact 图 4

我们使用 dbo.Contact 作为源,在添加一个 Lookup Transformation 来判断缺少的记录. :

图 5

打开,把“Specify how to handle rows with no matching entries” 设定为Redirect rows to no match output”:

图 6

在 Connection 页, “ 选择 “(local).AdventureWorks”. 选择“Use results of an SQL query” 选项,并且输入以下T-SQL语句 :

Select EmailAddress As Email From Person.Contact

Column界面,还是通过Email来匹配:

图 7

拖个 OLE DB Destination ,然后连接Lookup, 选择提示框选择 Lookup No Match Output :

图 8

把 OLE DB Destination 改名为 “StageDeletes” 双击打开.设置和之前一样. 建立表格如下:

![复制代码](http://common.cnblogs.com/images/copycode.gif)

CREATE TABLE [StageDeletes] (
    [FirstName] nvarchar(50),
    [LastName] nvarchar(50),
    [Email] nvarchar(50),
    [MiddleName] nvarchar(50)
)

![复制代码](http://common.cnblogs.com/images/copycode.gif)

[![image](http://images.cnitblog.com/blog/378031/201409/231512103571082.png "image")](http://images.cnitblog.com/blog/378031/201409/231512095604439.png)

点开Mappings.已经自动匹配 .:

图 9

和之前一样,我们要放个Execute SQL Task 处理删除动作:

图 10

打开 Execute SQL Task Editor 设置属性如下:

Name: Apply Staged Deletes
Connection: (local).AdventureWorks
SQLStatement: (这里原文应该写错了.不是 Person.Contact,而是 dbo.Contact)

Delete src
 From Person.Contact src
   Join StageDeletes stage
     On stage.Email = src.EmailAddress

右击Apply Staged Deletes 然后点 Execute Task执行单元测试:

图 11

最后在 Truncate StageUpdates 里面加上StageDeletes的Truncate语句 :

Truncate Table StageDeletes

[![image](http://images.cnitblog.com/blog/378031/201409/231512142952986.png "image")](http://images.cnitblog.com/blog/378031/201409/231512137015871.png) _图 __12_

执行这个SSIS包:

Figure 13

检查 Delete Rows Data Flow Task:

图 14

看来没什么问题. 在SQL中执行语句来验证下. (原文又写错了…应该是dbo.Contact) :

Use AdventureWorks go Select Count(*) As RecCount From dbo.Contact Where FirstName = 'Andy' And LastName = 'Leonard'

原文地址: http://www.sqlservercentral.com/articles/Integration+Services+(SSIS)/76395/

资源: 项目文件