1 动态改变数据源

package从创建到调试到测试到生产环境,往往需要运行在不同的服务器上。我们可以定义Environment和Server两个变量,一个用于改变 Server,一个用于接收实际Server的值。运行于不同的环境时,只用改一个Environment变量的值,Server及数据库连接就会随之改 变。

a. 定义Environment和Server变量

b.方法1:Server变量的EvaluateAsExpression设置为true,表达式填写为:

@[User::Environment]=="DEV"?"sqlServer\\dev":
(@[User::Environment]=="TEST"?"sqlServer\\test":
(@[User::Environment]=="PROD"?"sqlServer\\prod":"Unassigned"
))

b.方法2:在package开始前,放一个Sql执行任务(连接类型设置为ADO.NET),写上类似语句:

Select @Server = Server from PackageAdmin where Environment=@Environment && ApplicationName=@ApplicationName

然后给这个task添加必要的参数映射。这样可以根据数据库的配置,来动态改变其不同环境对应的DB Server。

c. 将连接对象的Expression中的ServerName绑定为Server变量。

2 OLE DB SQL Task

当Sql Task连接类型为OLE DB类型时,参数的映射和使用都将不同。

映射:参数的参数名不再是@XXX,而应该是其在sql语句中对应的序号。

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" 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使用:

a. 不再是where Server=@Server, 而是 Server = ?。 问号按出现顺序和参数映射表中的参数名对应。

b. Ole db存储过程使用命名参数: exec xxx_sp @server=? @environment=?

3 动态脚本

如果想根据不同的情况,创建不同表或者将数据插入不同表,可以利用将Sql Task的Expressions中的SqlStatementSource绑定到动态语句,如

aaarticlea/png;base64,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" alt="" />

表达式填写为:

"create table [dbo].["+@[User::TargetTable]+"] ..."

这样,sql task的sql语句,将根据你的表达式动态生成,你可以充分利用变量增加程序的灵活性。

如果同一语句在一个package中出现多次,你还可以直接将该语句绑定到EvaluateAsExpression为true的一个新变量中,然后将新变量绑定到整个SqlStatementSource属性中。

4 Foreach Loop 的一个小Bug

最开始的时候,ForeachLoop的选项出现在File上,但下面的编辑界面显示不正确。需要改变下选项再改回File。

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