The JOIN criteria was there: 'event.cid=data.cid' His query was fine: Select event.cid, event.timestamp from event, data Where ( event.timestamp between '2006-05-01' AND '2006-05-15' ) and event.cid=data.cid;
It may be rewritten into: SELECT event.cid, event.timestamp FROM event JOIN data ON event.cid=data.cid WHERE event.timestamp BETWEEN '2006-05-01' AND '2006-05-15'; ... Or ... SELECT event.cid, event.timestamp FROM event JOIN data USING(cid) WHERE event.timestamp BETWEEN '2006-05-01' AND '2006-05-15; Although that was not the issue... Maybe you ran out of memory into one of: max_allowed_packet net_buffer_length max_join_size Try enlarging those values... on the server also... But first try to run with '--compress' maybe this will fix... -- Gabriel PREDA Senior Web Developer -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]