On 07/24/2012 03:10 PM, Zoltan Szecsei wrote:
Hi,
I have a SHP file of some 1.1m polygons, of which I need to select
about half of them, and save them as a separate SHP file.
The trouble is when I select either via a Query, or via the TABLE
using the select options below, it just falls asleep (100% CPU
(ok, 12% as it must be single-threaded)).
After 45 minutes or so, I just kick it out and weep.
My platform is Win 7 Prof 64 bit (also tried on 32 bit) and using
1.8.0 Lisboa.
The selects I have tried are: "sq21code" = "C016*" and also
tried using "IN"
Any ideas what I am doing wrong and what I should try next?
In addition to Andre's correction about the * wildcard, with 1M
polygons, you probably should move the shapefile into a database
(i.e spatialite, PostGIS)
Thanks
& regards,
Zoltan
--
Micha Silver
GIS Consultant, Arava Development Co.
http://www.surfaces.co.il
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