Fix formula to render 0 if there's no results
Fix formula to render 0 if there's no results

splashblot/deep-insights.js,splashblot/dronedb,splashblot/dronedb,CartoDB/cartodb,CartoDB/cartodb,splashblot/deep-insights.js,CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,splashblot/dronedb,splashblot/dronedb,CartoDB/cartodb