Update powerwall.sh

powerwall.sh

@@ -743,7 +743,7 @@ fi
 			while IFS=$'\t' read id date hum ;do
 				echo "${id} ${date} ${hum}"
 		
-			done  < <(${mysql_conn} -se "USE servermonitor; SELECT id,date,hum from sensor_data WHERE sensorid=18 AND hum!="" ORDER BY id ASC;")
+			done  < <(${mysql_conn} -se "SELECT id,date,hum from sensor_data WHERE sensorid=18 AND hum!="" ORDER BY `sensor_data`.`hum` ASC;")