Today I ran into a particular issue, consolidating user accounts. In this particular exercise, I needed to remove old user accounts that were not tied to any databases. Here is a neat trick I did to get a reasonable number of logins to look at for disabling.
CREATE TABLE ##names (NAME SYSNAME);
EXEC sp_msforeachdb ‘insert into ##names (name) select name from [?].sys.sysusers';
FROM sys.syslogins l
WHERE NOT EXISTS ( SELECT *
FROM ##names u
WHERE u.name=l.name )
Using the unsupported sp_msforeachdb stored procedure I could dump all the usernames into a table and compare it to the logins. Simple, quick, dirty…But saved a lot of time!