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Sql server Perms?

Posted on 2014-12-02
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Last Modified: 2014-12-02
Hello ,

I went to Databases > Login
Right clicked on the logins and saw this dialog box. See image.
I have a user new – he just needs to run queries within the SQL server. But should I do in this dialog box?
General, server roles, user mapping,  securables etc. – what should I do for this new user  - so that he can’t create or change the DBs but just be able to run  only  update , deletion insertion  queries?
Thank you
perms.png
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Question by:Rayne
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by:Jim Horn
Jim Horn earned 400 total points
ID: 40477086
>he just needs to run queries within the SQL server.
I'd flush out exactly what 'run queries' means:  On a subset of tables, SELECT only vs. insert-update-delete, does he need some reporting assistance, ..

Tread carefully here.
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by:Scott Pletcher
Scott Pletcher earned 1600 total points
ID: 40477103
>> But should I do in this dialog box? <<

No, never, not once, not ever.  (I hope that was clear enough :-) ).

Always use a script for assigning permissions.


The 100% structured way to do this is to first create your own user-defined role with all the necessary permissions.  Then assign that user -- and any others that need it -- to that role.  The only disadvantage of this role-based approach is that it doesn't cover dynamic SQL.  Granting permissions directly to the user would allow them to use dynamic SQL on the underlying objects as well.

I'll post sample commands for doing this within a few minutes.
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Scott Pletcher earned 1600 total points
ID: 40477115
CREATE ROLE data_reader_writer AUTHORIZATION dbo
CREATE USER user123 WITHOUT LOGIN --for testing; I assume you already have a username to assign permissions to

--using a role
EXEC sp_addrolemember 'db_datareader', data_reader_writer
EXEC sp_addrolemember 'db_datawriter', data_reader_writer
EXEC sp_addrolemember 'data_reader_writer', user123
--granting permissions directly without a role
EXEC sp_addrolemember 'db_datareader', user123
EXEC sp_addrolemember 'db_datawriter', user123

--test this user
EXEC AS USER = 'user123'
SELECT * FROM dbo.dbs
REVERT

DROP USER user123
DROP ROLE data_reader_writer
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Author Closing Comment

by:Rayne
ID: 40477431
thank you Sire (s)
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