SQL Server - Give a Login Permission for Read Access to All Existing and Future Databases

Question

I have a stored procedure that finds all the existing databases and reads from a table in each one.

Is there a way I can give a login read access to all databases,

Answer 1

USE [master] GO --IF Not EXISTS (SELECT * FROM syslogins where loginname = 'replace with Login name ') --CREATE LOGIN [replace with Login name ] FROM WINDOWS WITH DEFAULT_DATABASE=[master] --GO DECLARE @SQL VARCHAR(MAX) DECLARE @DatabaseName VARCHAR(255)

DECLARE crFetch CURSOR FOR --SELECT NAME FROM SYSDATABASES WHERE name in --('master','model','tempdb','msdb','distribution')

SELECT NAME FROM SYS.DATABASES WHERE name not in ('master','model','tempdb','msdb','distribution')

OPEN crFetch FETCH NEXT FROM crFetch INTO @DatabaseName

WHILE @@FETCH_STATUS <> -1 BEGIN

SET @SQL =

'USE [' + @DatabaseName + ']' + 'if not exists (select name from sysusers where name='+ ''''+ 'replace with Login name '+ ''''+ ')' + 'CREATE USER [replace with Login name ] FOR LOGIN [replace with Login name ]' + 'EXEC sp_addrolemember N' + '''' + 'db_ETL' + '''' + ', N' + '''' + 'replace with Login name ' + '''' +' '

--'EXEC sp_addrolemember N' + '''' + 'db_datareader' + '''' + ', N' + '''' + 'replace with Login name ' + '''' + --'if not exists(select name from sysusers where name='+ ''''+ 'db_executor'+''''+ 'and issqlrole=1)' + --'create ROLE db_executor' + ' ' + --'GRANT EXECUTE TO db_executor' + ' ' + --'EXEC sp_addrolemember N' + '''' + 'db_executor' + '''' + ', N' + '''' + 'replace with Login name ' + '''' +'

--PRINT @SQL

EXEC(@SQL)

FETCH NEXT FROM crFetch INTO @DatabaseName END

CLOSE crFetch DEALLOCATE crFetch

Answer 2

For new databases, add the user in the model database. This is used as the template for all new databases.

USE model
CREATE USER ... FROM LOGIN...
EXEC sp_addrolemember 'db_datareader', '...'

For existing databases, use sp_MSForEachDb

EXEC sp_MSForEachDb '
 USE ?
 CREATE USER ... FROM LOGIN...  
 EXEC sp_addrolemember ''db_datareader'', ''...''
'