Move SELECT to SQL Server side
- by noober
Hello all,
I have an SQLCLR trigger. It contains a large and messy SELECT inside, with parts like:
(CASE WHEN EXISTS(SELECT * FROM INSERTED I WHERE I.ID = R.ID)
THEN '1' ELSE '0' END) AS IsUpdated -- Is selected row just added?
as well as JOINs etc. I like to have the result as a single table with all included.
Question 1. Can I move this SELECT to SQL Server side? If yes, how to do this?
Saying "move", I mean to create a stored procedure or something else that can be executed before reading dataset in while cycle.
The 2 following questions make sense only if answer is "yes".
Why do I want to move SELECT? First off, I don't like mixing SQL with C# code. At second, I suppose that server-side queries run faster, since the server have more chances to cache them.
Question 2. Am I right? Is it some sort of optimizing?
Also, the SELECT contains constant strings, but they are localizable. For instance,
WHERE R.Status = "Enabled"
"Enabled" should be changed for French, German etc. So, I want to write 2 static methods -- OnCreate and OnDestroy -- then mark them as stored procedures. When registering/unregistering my assembly on server side, just call them respectively. In OnCreate format the SELECT string, replacing {0}, {1}... with required values from the assembly resources. Then I can localize resources only, not every script.
Question 3. Is it good idea? Is there an existing attribute to mark methods to be executed by SQL Server automatically after (un)registartion an assembly?
Regards,
