drop partition + add partition 语法校验通过，执行失败

[KaiNiao]

描述
一条SQL中先新增分区，后删除分区，语法校验通过，但是执行失败

重现
SQL：
alter table t_partition_drop add partition (partition p9 VALUES LESS THAN (10)), drop partition p3,p6;

语法校验结果：
[{'id': 1, 'stage': 'CHECKED', 'errlevel': 0, 'stagestatus': 'Audit Completed', 'errormessage': '', 'sql': 'USE cctest', 'affected_rows': 0, 'sequence': '0_0_00000000', 'backup_dbname': '', 'execute_time': '0', 'sqlsha1': '', 'backup_time': '0', 'actual_affected_rows': ''}, {'id': 2, 'stage': 'CHECKED', 'errlevel': 0, 'stagestatus': 'Audit Completed', 'errormessage': '', 'sql': 'alter table t_partition_drop add partition (partition p9 VALUES LESS THAN (10)), drop partition p3,p6', 'affected_rows': 0, 'sequence': '0_0_00000001', 'backup_dbname': '', 'execute_time': '0', 'sqlsha1': '', 'backup_time': '0', 'actual_affected_rows': ''}]

执行日志：
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' drop partition p3,p6' at line 1

环境

• 数据库: mysql
• 版本: 5.7.24
• inception
• 版本:v1.3.0

[KaiNiao]

原始表结构

CREATE TABLE t_partition_drop (
id int(11) NOT NULL,
p int(11) NOT NULL DEFAULT '0',
a int(11) DEFAULT '0',
PRIMARY KEY (id,p),
KEY idx_a (a)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
/*!50500 PARTITION BY RANGE COLUMNS(p)
(PARTITION p3 VALUES LESS THAN (4) ENGINE = InnoDB,
PARTITION p6 VALUES LESS THAN (7) ENGINE = InnoDB) */

[hanchuanchuan]

已发布v1.3.0-86,请升级后重试.