如何在MySQL中获取上个月的最后一天？

mysql> SELECT LAST_DAY(now() - INTERVAL 1 MONTH) AS 'LAST DAY OF PREVIOUS MONTH';

+----------------------------+
| LAST DAY OF PREVIOUS MONTH |
+----------------------------+
| 两017-09-30                 |
+----------------------------+
1 row in set (0.00 sec)