Hi, I can't get an error with teh sql via psql, but only mapserver, so I'll ask here.
I'm using a mapfile with a DATA statement similar to the ones at: http://mapserver.org/input/vector/postgis.html The data statement is below... The random() field, combined with order by & limit is to generate a random subset of records from each query. I can order by a "genuine" int field & get the expected result in mapserver (WFS) response. I can order by a calculated field 'random() as rand' and get the expected random sorted list back. I can impose a limit 5 on the fixed order by field, & get the 5 records back. All work with the SQL in the psql commandline & the mapfile. However, if I try to order by rand then limit 5, it works fine from the command line, but returns no records/features via WFS/mapserver. So, with teh layer below, if I change the field to order by to atlas_id (an int in the view being queried) it works. If I leave the order by as rand ("random() as rand" in the view being queried) with no "limit 5" I get a valid response with some 250 records via WFS, if I use "limit n" with the datasets ordered by rand, I get zero records returned via WFS, but the metadata shows the data extent to be correct. Any advice appreciated... Brent Wood DATA "startp from ( select atlas_id, filename, startp, rand from t_station t, V_atlas_id a where t.trip_code = 'tan0906' and t.station_no = 241 and t.station_no=a.station_no and t.trip_code=a.trip_code order by rand limit 5 ) as myquery using unique atlas_id using srid=4326" _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
