sqlQuery=fmt.Sprintf(`SELECT TIME_FLOOR(__time, '%s') as "time", COUNT(SpanId) as "numCalls", ExternalHttpUrl as externalHttpUrl FROM %s WHERE ServiceName='%s' AND Kind='3' AND ExternalHttpUrl != '' AND "__time" >= '%s' AND "__time" <= '%s'
GROUP BY TIME_FLOOR(__time, '%s'), ExternalHttpUrl`,query.Period,constants.DruidDatasource,query.ServiceName,query.StartTime,query.EndTime,query.Period)