` Who's logged on -- SQL (J Shankar ) - Icetips Article
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Par2: Who's logged on -- SQL
2009-03-12 -- J Shankar
 
>Does anyone know how I can read the MS SQL sp_hook to determine in a station >is logged on. This is my thinking, I would like to write a function that can >allow a user to logon only once to the database. I use a query shown below to find out all users logged into a database :: SELECT master.dbo.sysprocesses.nt_username AS NetworkUserName, master.dbo.sysprocesses.loginame AS LoginName, convert(char(20),master.dbo.sysprocesses.login_time,113) AS LoginTime, master.dbo.sysdatabases.name AS DatabaseName, master.dbo.sysprocesses.hostname AS ComputerName, master.dbo.sysprocesses.net_address AS MACAddress, master.dbo.sysprocesses.program_name AS ProgramName FROM master.dbo.sysprocesses, master.dbo.sysdatabases WHERE master.dbo.sysdatabases.dbid = master.dbo.sysprocesses.dbid AND master.dbo.sysdatabases.name = '' You can use the returned MACAddress to verify the workstation. ----- I left out the last part of the WHERE query as I thought it was unnecessary but here is it :: AND master.dbo.sysprocesses.program_name LIKE '%' And, for the above query to work, I set my connection string as :: GLO:ConnectionString = CLIP(GLO:Server) & ',' & CLIP(GLO:Database) & ',' & CLIP(GLO:DbUser) & ',' & CLIP(GLO:DbPWord) & ';APP=_' & CLIP(GLO:User) & CHOOSE(GLO:CompName = '', '', ';WSID=' & CLIP(GLO:CompName)) where GLO:User is the application user name and GLO:DbUser is the database/proxy user.

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