William, Yes, but only in a very restricted fashion. The shapefile driver docs says:
"""Currently the OGR Shapefile driver only supports attribute indexes for looking up specific values in a unique key column. To create an attribute index for a column issue an SQL command of the form "CREATE INDEX ON tablename USING fieldname". To drop the attribute indexes issue a command of the form "DROP INDEX ON tablename". The attribute index will accelerate WHERE clause searches of the form "fieldname = value". The attribute index is actually stored as a mapinfo format index and is not compatible with any other shapefile applications.""" I think that is still accurate. Best regards, Frank On Wed, Apr 25, 2012 at 5:38 PM, William Kyngesburye <wokl...@kyngchaos.com> wrote: > Is it possible to index fields in a DBF, and does GDAL support that for a > JOIN? > > ----- > William Kyngesburye <kyngchaos*at*kyngchaos*dot*com> > http://www.kyngchaos.com/ > > "Those people who most want to rule people are, ipso-facto, those least > suited to do it." > > - A rule of the universe, from the HitchHiker's Guide to the Galaxy > > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Software Developer _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
