Kyle Sherry - Thursday, October 12, 2017 3:56 PM
Before you get going too far, you should be aware that the only table or views that are supported for any access in the Reporting Services databases would be the ExecutionLog views. Updating the tables directly isn't supported and is likely to cause issues. The supported means of any changes would be through report manager or using the Web Service, SOAP API. You can use rs.exe to access those using what is basically VB script and execute the script against SSRS.
And there a lot of things in the tables that are in XML as MS didn't design (nor document) any of that for general use.
In regards to problem 2, the comments are stored in the Subscription table in the extension settings column. I would really, really not make modifications directly to the table.
In regards to problem 1, I have no idea what you mean by name of the subscription. For the subscriptions, there are descriptions and there are report names. Not sure if you mean one of those. If you have your own report or using one from the TechNet Gallery or elsewhere, use an order by in the query.
Sue