How can I map a login to a database using T-SQL (not SSMS)

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Question :

I’m writing a program that requires me to assign all permissions and everything in code. I have gotten stuck in this part:

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I just want to do the equivalent of clicking the little box under “Map” for the msdb database and assigning that user to SqlAgentUser role. I need a user to be able to add/edit SQL Server Agent jobs. I can get the settings right using SSMS but I can’t for the life of me figure out how to do it in raw SQL.

I’ve looked into ALTER LOGIN but I’m not seeing anything that does what I need. I suspect I just don’t know the correct terms to Google. I don’t normally do this sort of thing.

Any help is much appreciated!

Answer :

USE msdb;
ALTER ROLE SqlAgentUserRole ADD MEMBER shims;

Also, for future reference, any time you know how to do something in the UI but not in a script, this is what the Script option on most dialogs is for – it will show you what script SSMS would have executed:

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If you want to change the currentdefault database to a different one try:

alter login <loginname> with default_database = <dbname>;

Now, create a user for above login created

 use <dbname>;
 create user <username> from login <loginname>;

And now you can assign roles to the above create user for the login as below:

use <dbname>
exec sp_addrolemember 'db_owner', '<username>';

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