[postgis-users] subqueries in update?

[Mark Cave-Ayland]

On Fri, 2007-04-13 at 12:19 +0200, Marc Weber wrote:
> Beeing a total noob I wonder wether I can use suqueries such like 
> update haueser set inside=contains(geomunion( (SELECT the_geom from shape) ),the_geom);
> 
> to set a property of each row indicating that the polygon is inside the union of all polygons of table shape.
> 
> Reading posgres documentation I only could find subqieries in the Where or
> SELECT ... part of a query.
> 
> If not how would you accomplish this task?
> 
> Marc


Hi Marc,

Sure you can. Your version above won't use any spatial indexes (and so
may run quite slowly with a lot of records) but it should work.


Kind regards,

Mark.