自动更改SQL Server报表的数据源

Question

We have an ASP .NET MVC web application that links to some SQL Server Reporting Services reports. Our web application uses one database for the morning (let's call this the "AM database") and a different database for the afternoon/night ("PM database").

We have a SQL Server Agent job set up that switches the connection string for the web application from the AM database to the PM database (or vice-versa) on a schedule. It works by copying/replacing the MVC application's Web.config file with the appropriate AM/PM version. This works as intended.

However, the reports will remain pointed to whichever database they were using previously, unless the data source is manually changed through SSRS. These reports need to be updated to point to the same database as the MVC web app.

How can I automate this process (preferably through SQL Server Agent)? We need the reports to change their database connection on a regular interval.

Answer 1

This works for embedded connections I am not sure about shared data source references. Just add two parameters to your report for database name and database server name. You could also use codes or mask the names if you prefer not so send this info over the wire.

In your embedded data set add the following as your connectionstring

expression:="Data Source="+Parameters!DatabaseServerName.Value+";Initial Catalog="&Parameters!DatabaseName.Value

Next, add a defined user for your credentials then all you need to do is pass in the two params for each report from your application.

NOTE: You need to add your defaults when designing to a server that is accessible.