Re: Rounding Float Array

On Mon, Sep 21, 2015 at 11:55:23AM +0200, Alex Magnum wrote:
> Hello,
>
> I have a float array holding geo location information.
>
> geoloc
> -----------------------------------
> {5.3443133704554,100.29457569122}
> {5.3885574294704,100.29601335526}
> {3.1654978750403,101.60915851593}
> {5.3766154817748,100.31472444534}
> {3.1545014704258,101.70036971569}
> (5 rows)
> Is there an easy way to round all values to 4 decimals.

Sure:
$ select geoloc from alex;
geoloc
-----------------------------------
{5.3443133704554,100.29457569122}
{5.3885574294704,100.29601335526}
{3.1654978750403,101.60915851593}
{5.3766154817748,100.31472444534}
{3.1545014704258,101.70036971569}
(5 rows)

(depesz(at)[local]:5960) 12:15:46 [depesz]
$ select geoloc::numeric(8,4)[] from alex;
geoloc
-------------------
{5.3443,100.2946}
{5.3886,100.2960}
{3.1655,101.6092}
{5.3766,100.3147}
{3.1545,101.7004}
(5 rows)

depesz