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mysqlSQL语句积累_MySQL

时间:2021-07-01 10:21:17 帮助过:10人阅读

bitsCN.com --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;

--删除列
alter table software_type drop column upid, drop column orderid;

--修改列名
alter table software_process change software_id softwareid int(11) not null;

--更改列编码

alter table cms_contentbody modify column offical_site_name varchar(30) character set utf8 collate utf8_unicode_ci not null;

--增加列

alter table cms_flash add name varchar(30) not null unique;bitsCN.com

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