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      1. mysql SQL語句積累參考

        時間:2024-10-02 10:28:18 SQL 我要投稿
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        mysql SQL語句積累參考

          --重命名表

          rename table t_softwareport to software_port;

          --建立外鍵

          alter table software_port add constraint fk_software_port_softwareprocessid foreign key (softwareprocessid) references software_process (id) on restrict on restrict;

          --刪除列

          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;

          --更改列編碼

          alter table cms_contentbody modify column offical_site_name var30) character set utf8 collate utf8_unicode_ci not null;

          --增加列

          alter table cms_flash add name var30) not null unique;

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