Re: How to sum monetary variables

2011/7/18 Martín Marqués <martin.marques@gmail.com>: > I'm building a table (which is a report that has to be printed) with a > bunch of items (up to 300 in some cases) that have unitary price > (stored in a numeric(9,2) field), how many there are, and the total > price for each item. At the end of the table there is a total of all > the items. > > The app is running on PHP and PostgreSQL is the backend. > > The question is, how do I get the total of everything? > > Running it on PHP gives one value, doing a sum() on the backend gives > another, and I'm starting to notice that even using python as a > calculator gives me errors (big ones). Right now I'm doing the maths > by hand to find out who has the biggest error, or if any is 100% > accurate. > > Any ideas? For financial values, I use the money type. I use MS SQL, but PostgreSQL has http://www.postgresql.org/docs/9.0/interactive/datatype-money.html -- Richard Quadling Twitter : EE : Zend : PHPDoc @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea