hello when I enter this command: select count(*) from shey6 as a,sel10p4 as b where contains(a.wkb_geometry,b.wkb_geometry) ='t'; ERROR: Operation on mixed SRID geometries shey6 polygon sel10p4 point how can I solve the problem ? regards -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.