mysql用法心得

mysql重命名表名和列名

2011-04-07 14:08

显示表结构 describe jin;     将表jin重命名为chun       rename table jin to chun;       或者       alter table jin rename to chun;           重命名列 --要列出列的类型， column可有可无   alter table jin change column name pass varchar(50);       检索表       show tables like 'jin%'           同一数据库里的table1表的内容导入到table2中？       insert into table2 select * from table1;               ##mysql重命名表,建立外键,增、删、改列名实例   ##增加到某个字段之后 alter table tb_nippon_mms_info add province varchar(50) default null after retCode; alter table tb_nippon_mms_info add city varchar(50) default null after province;   ##增加到某个字段之前 alter table tb_nippon_mms_info add province varchar(50) default null before retCode; alter table tb_nippon_mms_info add city varchar(50) default null before province;     ##删除名字为states的列 alter table tb_nine_integral_mo_info drop column states ;   ##改变手机号码字段为约束键 alter table business.tb_nine_ticket_popedom change phone phone varchar(50) not null unique;   ##改变列名flag为states alter table tb_nine change flag states tinyint(1);     –重命名表 rename table t_softwareport to software_port;   –建立外键 alter table software_port add constraint fk_software_port_softwareprocessid foreign key (softwareprocessid) references software_process (id) on delete restrict on update restrict;