查询表的字段类型：
mysql> desc t_template_title; +----------------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------------+--------------+------+-----+---------+-------+ | id | int(11) | NO | | 0 | | | effective_time | int(11) | NO | | 0 | | | props | varchar(128) | NO | | | | | props_passive | varchar(128) | NO | | | | | buffs | varchar(128) | NO | | | | | name | varchar(64) | NO | | | | | resource_type | int(11) | NO | | 0 | | | resource_id | int(11) | NO | | 0 | | | pic_width | int(11) | NO | | 0 | | | pic_height | int(11) | NO | | 0 | | | descript | varchar(256) | NO | | | | | agent | smallint(6) | NO | | 0 | | | type | tinyint(4) | NO | | 0 | | | order | int(4) | NO | | 0 | | +----------------+--------------+------+-----+---------+-------+
添加字段：
alter table t_template_title add props_passive VARCHAR(128) NOT NULL default '' after props;
删除字段：
mysql> alter table t_template_title drop props_passive;