Add CDB_XYZ_Extent and CDB_XYZ_Resolution functions
Add CDB_XYZ_Extent and CDB_XYZ_Resolution functions

codeandtheory/cartodb,DigitalCoder/cartodb,future-analytics/cartodb,nyimbi/cartodb,future-analytics/cartodb,splashblot/dronedb,CartoDB/cartodb,future-analytics/cartodb,future-analytics/cartodb,thorncp/cartodb,nyimbi/cartodb,codeandtheory/cartodb,dbirchak/cartodb,raquel-ucl/cartodb,CartoDB/cartodb,nuxcode/cartodb,codeandtheory/cartodb,dbirchak/cartodb,dbirchak/cartodb,bloomberg/cartodb,thorncp/cartodb,thorncp/cartodb,DigitalCoder/cartodb,UCL-ShippingGroup/cartodb-1,bloomberg/cartodb,UCL-ShippingGroup/cartodb-1,raquel-ucl/cartodb,UCL-ShippingGroup/cartodb-1,splashblot/dronedb,nyimbi/cartodb,codeandtheory/cartodb,raquel-ucl/cartodb,splashblot/dronedb,splashblot/dronedb,DigitalCoder/cartodb,thorncp/cartodb,CartoDB/cartodb,DigitalCoder/cartodb,bloomberg/cartodb,nyimbi/cartodb,nyimbi/cartodb,UCL-ShippingGroup/cartodb-1,CartoDB/cartodb,future-analytics/cartodb,raquel-ucl/cartodb,dbirchak/cartodb,bloomberg/cartodb,bloomberg/cartodb,CartoDB/cartodb,splashblot/dronedb,raquel-ucl/cartodb,nuxcode/cartodb,nuxcode/cartodb,nuxcode/cartodb,DigitalCoder/cartodb,thorncp/cartodb,UCL-ShippingGroup/cartodb-1,dbirchak/cartodb,nuxcode/cartodb,codeandtheory/cartodb