First: I believe this is not legal (looking at myySQL manual p 6.5.3): PRIMARY KEY (key1), KEY (key2) You may use one or the other.
Second: You may search by either owner_id or customer_id without creating an index. Such as: SELECT * FROM mytable WHERE owner_id=123; -----Original Message----- From: Federico Schwindt [mailto:[EMAIL PROTECTED]] Sent: Wednesday, October 31, 2001 3:57 PM To: [EMAIL PROTECTED] Subject: key question hi, i'm not sure if this belongs here, but i cannot seem to find the answer anywhere else. first, what's the difference between: PRIMARY KEY (key1, key2) PRIMARY KEY (key1), KEY (key2) second, let's suppose the following table: owner_id int(11), customer_id int(11), customer_info varchar(100) and i want to search either by owner_id and customer_id. can i do this w/o creating the indexes by hand? or do i have to create'em explicity and specify which one i'm gonna use before performing a query? if anyone can help me or point me to where i can find this kind of stuff i'd appreciate it. thanks, f.- --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
