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Select and order by question

From: Andy Dunlop <andy(at)infocus(dot)co(dot)za>
To: pgsql-php(at)postgresql(dot)org
Subject: Select and order by question
Date: 2006-05-03 09:13:10
Message-ID: 1146647591.7286.284.camel@localhost.localdomain (view raw or flat)
Thread:
Lists: pgsql-php
Hi - I have the following code:

//show table of current events needing action
$sSql = "SELECT id FROM crm_leads ";
$sLeads = pg_exec($conn,$sSql);
for($e=0;$e<pg_numrows($sLeads);$e++){
        $sSql = "SELECT * FROM crm_events WHERE crm_leads_id =
".pg_result($sLeads,$e,"id")." AND follow_up_action!='' ORDER BY
follow_up_date asc limit 1";
        $sRes = pg_exec($conn,$sSql);
        $sHits = pg_numrows($sRes);
        if($sHits!=0){
                for($i=0;$i<$sHits;$i++){
              // generate the display here
        }
}

crm_leads is a parent with many crm_events as it's children.
This code gives me the correct set of rows.
My problem is that I want only the last row from crm_events (as per
limit 1) but I want those rows sorted by follow_up_date. I guess I need
to have the whole query in one select statement? But how? 

Any help appreciated
Thanks
Andy Dunlop

www.infocus.co.za
+27 21 532 0335 office
+27 82 770 8749 mobile

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