[Qgis-user] QgsVectorLayer: SQL query

[Jürgen E. Fischer]

Hi Pietro,

On Tue, 01. Dec 2009 at 12:26:47 +0100, Pietro Panzeri wrote:
>    I'm trying to select features of a vector layer using an SQL query and
>    show only selected ones.
>    I used "Query builder" on "Attribute Table" but it's very slow when the
>    vlayer features are a lot (around 200000).

Use the Query builder from the vector layer properties (IIRC only available for
postgis layer in <1.4 and starting with 1.4 also with OGR and spatialite).


Jürgen


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