On Tuesday 15 October 2002 10:59 am, Heikki Tuuri wrote: > Walt, > > ----- Original Message ----- > From: "walt" <[EMAIL PROTECTED]> > To: "Heikki Tuuri" <[EMAIL PROTECTED]> > Cc: <[EMAIL PROTECTED]> > Sent: Tuesday, October 15, 2002 5:56 PM > Subject: Re: innodb not using correct index > > > Heikki Tuuri wrote: > > > Walt, > > > > > > ----- Original Message ----- > > ... > > > Heikki, > > Thanks for you answer! > > I found what appears to be a tweak (I'd say BUG but the info is correct) > > needed > > > with mysql. > > If I make this query a range on the date, it takes less than a second to > > return > > > the result even though the > > ending date I'm using is > the max(date) in the table. > > > > > > Example: > > > > mysql> select max(CREATE_DATE) FROM XRAY; > > +---------------------+ > > > > | max(CREATE_DATE) | > > > > +---------------------+ > > > > | 2002-10-03 20:12:57 | > > > > +---------------------+ > > 1 row in set (0.07 sec) > > > > select several_fields from xray > > where create_date > '2002-10-03' > > and cust_id = 'TEST1'; > > > > Takes about 1 1/2 minutes > > > > select several_fields from xray > > where create_date > '2002-10-03' > > and create_date < '2002-10-03 23:59:59' > > and cust_id = 'TEST1'; > > > > Takes less than a second. > > > > Problem solved! > > I guess 3.23.53 solves exactly this optimization glitch. Unfortunately, > Lenz seems to have built max-3.23.53 without InnoDB, and you have to wait > to tomorrow to test it. > > > Thanks again Heikki! > > > > walt > > Thank you! > > Heikki > > sql query
Heikki, I was finally able to get 3.23.53 rpms last night (had to pull them from a mirror in Denmark) and they included the InnoDB table handler and that's what I'm testing with so I'm thrilled! I'll wait a couple of days and then download and install the "new" rpms to make sure they are correct Have a great day (or night depending where you are)! :-) -- Walter Anthony System Administrator National Electronic Attachment Atlanta, Georgia 1-800-782-5150 ext. 1608 "If it's not broke....tweak it" --------------------------------------------------------------------- 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
