I'm trying to come up with an efficient way to do the following task, but I haven't found the correct join syntax to do it.
I have table "users" for keeping a list of users I need to check logins for. It contains the following fields: id,Full-Name,User-Name I have table called "logs" that contains the actual radius log data. The three fields I am concerned with are: User-Name,Date,Time I have gotten thus far almost what I want with the following query. SELECT users."User-Name",max(logs."Date") as login_date,max(logs."Time") as login_time FROM logs where logs."User-Name"=users."User-Name" GROUP BY users."User-Name"; This gives me the User-Name, date, and time of people WHO HAVE LOGGED IN. I'm looking to have a query that returns all of the users in the first table, including those who have not logged in. I have an external perl script that generates a nice html report for the manager. I have a script that parses the raw .csv files, but I'm trying to move it entirely to postgres, including if possible stored-procedures in plperl. I already have a perl script that imports the raw log files into the logs table. Am I on the right track? Thanks, Stephen Sill II ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
