[Qgis-developer] Python: change query of PostGIS layer

[Martin Dobias]

On Mon, Apr 30, 2012 at 1:10 PM, Bernhard Ströbl
<bernhard.stroebl at jena.de> wrote:
> Hi list,
>
> I am trying to change the query of an already loaded PostGIS layer from
> within a plugin. Same as if I right-clicked on the layer, chose "Query..."
> and entered a WHERE clause there.

That should be as simple as:
>>> vlayer.setSubsetString("category = 3")

Martin