[gdal-dev] PgSQL and OLCFastFeatureCount

[Paul Ramsey]

The PgSQL driver is returning TRUE for OLCFastFeatureCount and then running "SELECT Count(*)” to fulfill the request. Since that is actually going to apply a full table scan, it’s not *really* a fast feature count in my estimation, but perhaps GDAL has a different standard? What’s the standard for a fast feature count? Basically instant (the record count resides in header metadata or something similar)? Or “fast enough for small things”?

P.


-- 
Paul Ramsey
http://cleverelephant.ca
http://postgis.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20150116/1b1fdc36/attachment.html>