Re: [INTERFACES] AVG function

Hannu Krosing wrote:
> rodneyr(at)embratel(dot)com(dot)br wrote:
> >
> > I'm using the AVG function to get the average of some integer values of my
> > database,
> > but the result is comming in the integer format too, and I'm loosing some
> > precision.
> >
> > Does someone know how to get the result of the AVG function in a float type,
> > without
> > changing the structure of my table?
>
> Try this:
>
> hannu=> select * from t;
> i
> -
> 4
> 4
> 4
> 4
> 3
> (5 rows)
>
> hannu=> select avg(i * 1.0) from t;
> avg
> ---
> 3.8
> (1 row)
>
Actually, this will work without the need for a multiplication:

bga=> select * from t;
i
-
1
2
3
4
5
6
(6 rows)

bga=> select AVG(i::float) from t;
avg
---
3.5
(1 row)

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