mysql当前连接表中的command值为sleep是什么意思

mysql当前连接表中的command值为sleep是什么意思

mysql> show processlist;
+-------+------+-----------+------+---------+------+----------+------------------+
| Id    | User | Host      | db   | Command | Time | State    | Info             |
+-------+------+-----------+------+---------+------+----------+------------------+
| 43751 | root | localhost | jm   | Query   |    0 | starting | show processlist |
| 44029 | root | localhost | jm   | Sleep   |   15 |          | NULL             |
+-------+------+-----------+------+---------+------+----------+------------------+
2 rows in set (0.00 sec)