Heeh. That's not a random blog post, that's the official manual :-p If it's in there, it's pretty much trustworthy; and I've learned something new :-) So apparently there's a dedicated "NULL" bit to columns... Yes, then there would be a small performance benefit.
I stand corrected. Still, as you've noticed, don't change the design of an existing application without thoroughly testing the consequences :-p ----- Original Message ----- > From: sono...@fannullone.us > To: mysql@lists.mysql.com > Sent: Tuesday, 14 June, 2011 7:34:04 PM > Subject: Re: Data missing after field optimization > > It took me awhile, but I just found it again, in case anyone is > interested: > > http://dev.mysql.com/doc/refman/5.0/en/data-size.html > > > 7.8.1. Make Your Data as Small as Possible > > Declare columns to be NOT NULL if possible. It makes everything > faster and you save one bit per column. If you really need NULL in > your application, you should definitely use it. Just avoid having > it on all columns by default. > > Marc -- Bier met grenadyn Is als mosterd by den wyn Sy die't drinkt, is eene kwezel Hy die't drinkt, is ras een ezel -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
