I reread my post and meant no disrespect Wols. I shouldnt post replies without considering twice. On Oct 25, 2011 7:00 PM, "Wols Lists" <antli...@youngman.org.uk> wrote:
> On 25/10/11 22:22, Steve Romanow wrote: > > I don't know if I agree that SELECT is faster. If you are using > > indexed fields, SELECT is definitely not the good choice. > > > SELECT *is* faster. Because it does far less work! > > EXECUTE SELECT needs to read the entire file to create a select list. > > SELECT merely reads group 0 to create a partial select list, then when > it's exhausted goes on to group 1 and so on and so on. > > Which is BEST depends on what you want. Which is FASTER is always SELECT. > > (Oh - and while the poster didn't get it quite right, READNEXT is fast > on UV, because while it doesn't pull the record into your program, > because the key and data are stored together the mere act of accessing > the key will cache the data at the same time). > > Cheers, > Wol > _______________________________________________ > U2-Users mailing list > U2-Users@listserver.u2ug.org > http://listserver.u2ug.org/mailman/listinfo/u2-users > _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
