MySQL中修改表前缀的SQL语句是什么

在mysql中，可以利用“ALTER TABLE”语句修改表前缀，修改表前缀可以看做修改表名，利用RENAME可以修改表名，语法为“ALTER TABLE 原表名 RENAME TO 新表名; ”。

本教程操作环境：windows10系统、mysql8.0.22版本、Dell G3电脑。

mysql怎么修改表前缀

使用sql语句修改mysql数据库表前缀名

首先我们想到的就是用sql查询语句来修改,这个方法也很方便，在运行 SQL 查询框中输入如下语名就可以了。

ALTER TABLE 原表名 RENAME TO 新表名;
    

如：

ALTER TABLE old_post RENAME TO new_post;
    

Sql查询语句有一个缺点，那就是一句SQL语句只能修改一张数据库的表名,如果你要精确修改某一张表，很好用。如果数据库表很多的话，比较麻烦。

但是我们可以通过一条语句一次性生成所有的sql语句：

select concat('alter table ',table_name,' rename to ',table_name) from information_schema.tables where table_name like'dmsck_%';
    

生成语句如下：

alter table dmsck_acategory rename to dmsck_acategory;
    
alter table dmsck_address rename to dmsck_address;
    
alter table dmsck_article rename to dmsck_article;
    
alter table dmsck_attrcategory rename to dmsck_attrcategory;
    
alter table dmsck_attribute rename to dmsck_attribute;
    
alter table dmsck_brand rename to dmsck_brand;
    
alter table dmsck_cart rename to dmsck_cart;
    
alter table dmsck_category_attr rename to dmsck_category_attr;
    
alter table dmsck_category_goods rename to dmsck_category_goods;
    
alter table dmsck_category_store rename to dmsck_category_store;
    
alter table dmsck_collect rename to dmsck_collect;
    
alter table dmsck_comment rename to dmsck_comment;
    
alter table dmsck_coupon rename to dmsck_coupon;
    
alter table dmsck_coupon_sn rename to dmsck_coupon_sn;
    
alter table dmsck_enterprise rename to dmsck_enterprise;
    
alter table dmsck_filmstrip rename to dmsck_filmstrip;
    
alter table dmsck_friend rename to dmsck_friend;
    
alter table dmsck_function rename to dmsck_function;
    
alter table dmsck_gattribute_rule rename to dmsck_gattribute_rule;
    
alter table dmsck_gcategory rename to dmsck_gcategory;
    
alter table dmsck_goods rename to dmsck_goods;
    
alter table dmsck_goods_attr rename to dmsck_goods_attr;
    
alter table dmsck_goods_bak rename to dmsck_goods_bak;
    
alter table dmsck_goods_down_log rename to dmsck_goods_down_log;
    
alter table dmsck_goods_image rename to dmsck_goods_image;
    
alter table dmsck_goods_old rename to dmsck_goods_old;
    
alter table dmsck_goods_qa rename to dmsck_goods_qa;
    
alter table dmsck_goods_spec rename to dmsck_goods_spec;
    
alter table dmsck_goods_statistics rename to dmsck_goods_statistics;
    
alter table dmsck_groupbuy rename to dmsck_groupbuy;
    
alter table dmsck_groupbuy_log rename to dmsck_groupbuy_log;
    
alter table dmsck_keyword rename to dmsck_keyword;
    
alter table dmsck_mail_queue rename to dmsck_mail_queue;
    
alter table dmsck_member rename to dmsck_member;
    
alter table dmsck_message rename to dmsck_message;
    
alter table dmsck_module rename to dmsck_module;
    

然后将其复制到一个文本文件中，将要修改的前缀统一修改(稍稍麻烦)，然后再复制到mysql中执行sql语句就ok了。