Re: simple division

On Tue, Dec 4, 2018 at 1:29 PM Martin Mueller
<martinmueller(at)northwestern(dot)edu> wrote:
> I have asked this question before and apologize for not remembering it. How do you do simple division in postgres and get 10/4 with decimals?
> This involves cast and numeric in odd ways that are not well explained in the documentation. For instance, you’d expect an example in the Mathematical Functions. But there isn’t.

select 10/4, 10.0/4, 10/4.0, 10.0/4.0;

The first one returns 2, the rest of them 2.5 - from which one can
infer that if both inputs are integer (type) the output is integer
(type) - if at least one input is non-integer (type) the output will
be as well.

If you want to cast...select 10/(4::numeric)...

David J.