Re: Using calculated columns as arguments in same SELECT

On February 16, 2006 11:07 am, Michael Burke wrote:
> Hello,
>
> I am looking to simplify this query (uses PostGIS, but I have encountered
> this scenario with other chains of functions):
>
-- snip --

Immediately after sending this one, I realized I could do it with a 
sub-select:

gtest=# SELECT X(SubSel.transformed_geom), Y(SubSel.transformed_geom) FROM ( SELECT SetSRID(   Transform(
GeomFromText(      'POINT(142512 1020225)', 26910     ), 4326   ), -1) AS transformed_geom) SubSel;
 

This works fine.
Mike.

-- 
Michael Burke
Engineering Technologies Canada Ltd.
michael@engtech.ca  1 (902) 628-1705