[postgis-users] HINT: No function matches the given name and argument types
hi, i am using select query which is shown below SELECT sum(length(the_geom))/1000 AS km_roads FROM routable; and get error like - HINT: No function matches the given name and argument types. You might need to add explicit type casts. -- Rakesh Modi Software Engineer GIS Consortium ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] HINT: No function matches the given name and argument types
El Friday 14 May 2010, rakesh modi escribió: hi, i am using select query which is shown below SELECT sum(length(the_geom))/1000 AS km_roads FROM routable; and get error like - HINT: No function matches the given name and argument types. You might need to add explicit type casts. I usually prefer to use ST_length instead of length. Maybe that's the problem? (Btw, are you sure you have postgis installed on that database?) -- María Arias de Reyna Domínguez Área de Operaciones Emergya Consultoría Tfno: +34 954 51 75 77 / +34 607 43 74 27 Fax: +34 954 51 64 73 www.emergya.es ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] HINT: No function matches the given name and argument types
On 14 May 2010 10:21, rakesh modi rakesh.modi1...@gmail.com wrote: hi, i am using select query which is shown below SELECT sum(length(the_geom))/1000 AS km_roads FROM routable; and get error like - HINT: No function matches the given name and argument types. You might need to add explicit type casts. what is the projection of your geometry? ST_Length returns a length in the unit of the chosen projection. If you are working with lat, lon, you won't have meters coming out of ST_Length. Emilie Laffray ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
