Hello everybody. I am doing a project on routing and GIS and intend to use mapserver + pgrouting for it. Having compiled mapserver and pgrouting on my machine, I've tried to run some queries on pgrouting. There seems to be a problem with my query which is giving errors. I'm posting the query, the error generated by mapserver and the error.log file for mapserver. Please help me with making it work.<br>
<br>The query:<br><br>DATA "the_geom from (select b.gid, b.the_geom FROM (SELECT * FROM shortest_path('SELECT gid AS id, source::int4, target::int4, length::double precision AS cost FROM edges_line', 50, 210, false, false)) as a, edges_line as b where a.edge_id=b.gid) AS foo using unique gid using srid=-1"<br>
<br><br>The error generated by mapserver:<br><br>msDrawMap(): Image handling error. Failed to draw layer named 'route'.
msPostGISLayerWhichShapes(): Query error. Error executing query: ERROR: column "source" does not exist
LINE 1: SELECT gid AS id, source::int4, target::int4, length::double...
^
QUERY: SELECT gid AS id, source::int4, target::int4, length::double precision AS cost FROM edges_line
<br><br><br>The output of the error.log file:<br><br><br>[Tue Jun 12 09:56:02 2012].582969 msPostGISLayerWhichShapes query: select encode(ST_AsBinary(ST_Force_2D("the_geom"),'NDR'),'hex') as geom,"gid" from (select b.gid, b.the_geom FROM (SELECT * FROM shortest_path('SELECT gid AS id, source::int4, target::int4, length::double precision AS cost FROM edges_line', 50, 210, false, false)) as a, edges_line as b where a.edge_id=b.gid) AS foo where the_geom && GeomFromText('POLYGON((-6015.80966101695 -4605.49,-6015.80966101695 4811.71,6544.54966101695 4811.71,6544.54966101695 -4605.49,-6015.80966101695 -4605.49))',-1)<br>
[Tue Jun 12 09:56:02 2012].596551 msPostGISLayerWhichShapes query status: PGRES_FATAL_ERROR (7)<br>[Tue Jun 12 09:56:02 2012].596634 Error (msPostGISLayerWhichShapes()<br>) executing query: ERROR: column "source" does not exist<br>
LINE 1: SELECT gid AS id, source::int4, target::int4, length::double...<br> ^<br>QUERY: SELECT gid AS id, source::int4, target::int4, length::double precision AS cost FROM edges_line<br>[Tue Jun 12 09:56:02 2012].596688 msPostGISLayerWhichShapes(): Query error. Error executing query: ERROR: column "source" does not exist<br>
LINE 1: SELECT gid AS id, source::int4, target::int4, length::double...<br> ^<br>QUERY: SELECT gid AS id, source::int4, target::int4, length::double precision AS cost FROM edges_line<br><br>I'm not able to diagnose the problem here. Please help me with it. Thank you everybody.<br>