create table central.product ( id int auto_increment primary key, name varchar(255) not null, product_code varchar(255) not null, remark varchar(255) null, create_time datetime not null, update_time datetime not null, status int default 0 not null, constraint product_code_unique unique (product_code) ); alter table app add app_key varchar(64) null after package_name; alter table app add app_secret varchar(512) null after app_key; alter table app add verify_status int default 0 not null after app_secret; alter table app add product_code varchar(255) null after verify_status; alter table app alter column status set default 0; alter table app add project_code varchar(255) null after product_code; alter table app add constraint env_package_platform_unique unique (env, package_name, app_platform); alter table app_package add remark varchar(255) null after package_name; alter table channel add remark varchar(255) null after channel_name; alter table channel add constraint channel_name_unique unique (channel_name); alter table channel drop key project_code_unique; alter table project add access_key varchar(255) null after project_code; alter table project add access_secret varchar(255) null after access_key; alter table project add notify_url varchar(255) null after access_secret; alter table project add remark varchar(255) null after notify_url; alter table project add constraint project_code_unique unique (project_code);