Comments on: How to avoid imprecise DECIMAL math in MySQL

By: Xaprb

Xaprb — Tue, 23 Sep 2008 03:28:18 +0000

1 + 2

(Just testing to see if upgrading WP fixed the issues with plus)

By: newman

newman — Sat, 20 Sep 2008 03:57:47 +0000

note: topay PLUS dues

looks like the blog dont accept plus ^^.

By: newman

newman — Sat, 20 Sep 2008 03:56:32 +0000

Thank you very much, i thought i would be the only one on this world wide web with that problem. This is a very strange bug, which took me at least 3 days.

The problem wasn’t the solving, i just couldn’t believe that such a big mistake would be a system bug from mysql. The first time i’ve found it with that statement:

SELECT * FROM table WHERE ( topay dues ) > paid

I got a result, although everything was paid. After checking this with:

SELECT ( ( topay dues ) – paid ) as result FROM table WHERE ( topay dues ) > paid

it gave me : 0.00

which confused me more, well the end of the story, how i found a acceptable solution:

SELECT * FROM table WHERE ( ( topay dues ) – paid ) > 0.0001

By: Jason

Jason — Fri, 01 Jun 2007 06:26:10 +0000

Thanks for all that info, it was good to find out why the problem is happening rather than just that it cant work…
I seem to have worked out the issue I was having with float types with the following statement – hope it helps anyone else. Cheers:

SELECT ID, Round(Sum(Total),2) As calcTotal FROM table
GROUP BY ID
HAVING Round(Sum(Total),2) > 0
ORDER by calcTotal DESC