Thanks a lot, it worked with the double datatype!On Fri, 14 Jun 2002, Michael Ivanyo wrote: > I've had similar problems with this in my career and > have come to the conclusion that one should always use > double floats. The problem is typically due to round > off errors of the float type. The extra bytes of the > double type should resolve the problem. > --Michael > > --- Vandana <[EMAIL PROTECTED]> wrote: > > > > My table is as follows: > > > > Value Distance > > (float) (float) > > ---------------------------- > > 2.0 42.3 > > 1.0 56.9 > > 3.2 20.0 > > 1.3 18.5 > > > > > > > > I issued a query, > > > > 'update table set value=4.0 where distance=42.3' > > > > But this doesn't work. This works fine with the > > values 20.0 and > > 18.5 and doesn't work with the values 42.3 and 56.9. > > The problem, I > > discerned, was with the floating point comparison. > > Works fine with the > > rounded figures like, 20.0 and 18.5, while doesn't > > work with others. Is > > this the reason? In case yes, how do I solve the > > problem? I've tried > > creating the distance column with an explicitly > > specified precision. But > > doesn't work that way either. > > > > > > > > > --------------------------------------------------------------------- > > 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 > > > > > __________________________________________________ > Do You Yahoo!? > Yahoo! - Official partner of 2002 FIFA World Cup > http://fifaworldcup.yahoo.com > --------------------------------------------------------------------- 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
