MySQL insert into select 主键冲突解决方案

INSERT INTO test_category (id, create_date, update_date, label, sort, type, value, year) VALUES (replace(uuid(),'-',''), now(), now(), '汽车', 1, 'category', 'automobile', '2021');

INSERT INTO test_category (id, create_date, update_date, label, sort, type, value, year) VALUES (replace(uuid(),'-',''), now(), now(), '手机', 2, 'category', 'phone', '2021');

...

INSERT INTO test_category (id, name, kind_id, sort, type, year)
select concat(left(replace(uuid(),'-',''),28),(@i:=@i+1)) as id, name, kind_id, sort, type,'2022' as year
from exhibits_dict_new edn
left join (select @i:=1000) as t on 1 = 1
where year = '2021';

-- 创建一张表结构、索引信息一模一样的  空表
create table test_category_bak like test_category;

-- 往新备份的表中，插入需要备份的数据  全量备份，也可以在后面加上 where 条件进行条件备份
insert into test_category_bak select * from test_category;


-- 复制表，包含表中的数据
create table table_name2 as select * from table_name1;

-- 只复制表，不包含数据内容
create table table_name2 as select * from table_name1 where 1=2;