OCS sql query to retrieve IM messages for particular users

Question

I want to output all of the IM messages from an OCS database (LcsLogs), for various different users. I want all of the message they send or receive. I have something like the following at the moment:

SELECT * from dbo.Messages where
Messages.FromId = '111' or Messages.ToId = '111' or
Messages.FromId = '222' or Messages.ToId = '222' or
Messages.FromId = '333' or Messages.ToId = '333'

I also want to make absolutley sure I am searching all of the correct tables etc, and being new to LcsLogs databases, I am still not sure if my basic query is comprehensiev enough. I have seen the following query online:

 SELECT * from dbo.Messages, dbo.Users where
 dbo.Users.UserId = Messages.FromId

But I got quite a lot of duplication of messages using this query, and was unsure why we were querying "dbo.Users". Any help with this would be much appreciated.

Kind regards,

Answer 1

You can use this query to get the info that you want:

SELECT * from dbo.Messages where
  Messages.FromId in ('111', '222', '333')
  or
  Messages.ToId in ('111', '222', '333')

or to remove duplicates on your other query, use distinct like this:

SELECT distinct  * from dbo.Messages, dbo.Users where
 dbo.Users.UserId = Messages.FromId