Re: Combining 2 queries into 1?

And ofcourse, one part I didnt take into the equation, one complex query doesnt always execute faster than two fast queries. So I might as well be sure that the environment is optimized for the two queries im already having... I still however would like to know if its possible to join the two into one. Thanks in advance. -- -- Kim Steinhaug ---------------------------------------------------------------------- There are 10 types of people when it comes to binary numbers: those who understand them, and those who don't. ---------------------------------------------------------------------- www.steinhaug.com - www.easywebshop.no - www.webkitpro.com ---------------------------------------------------------------------- "Kim Steinhaug" <kim@steinhaug.com> wrote in message news:20040530172006.44102.qmail@pb1.pair.com... > I have theese two queries : > > select count(*) as online from online where uid=''; > select count(*) as online from online where uid!=''; > > Each online user has a uid (UserID), so if their logged > inn this field will represent their unique uid. If not logged > in its set to nothing. > > To detect how many online users the first query tells me > all the "anonymous" users and the second gives "members". > > Since theese two queries are fired on every page hit, I would > assume that if I could join theese queries into one I would > atleast save the mysql for a 50% of the queries. > > Ive veeb experimenting on the count(expression) without > any luck, probably since the server is running v4.0.17-standard > > So I wonder - is there any way I could join the above queries > into one single query? Ofcourse I could easily add another > field for the database, something like temp which is NULL for > anonymous and 1 for user if this makes is easier to group the > the query in some wmart way I havnt figured out at the moment. > > -- > -- > Kim Steinhaug > ---------------------------------------------------------------------- > There are 10 types of people when it comes to binary numbers: > those who understand them, and those who don't. > ---------------------------------------------------------------------- > www.steinhaug.com - www.easywebshop.no - www.webkitpro.com > ----------------------------------------------------------------------