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create table watch ( id int primary key auto_increment, code int ); insert into watch (code) values (null),(null),(null),(null),(null),(null),(null),(null),(null),(null); select * from watch; set @code = 1001; update watch join ( select id, @code := @code + 1 as code from watch ) data using (id) set watch.code = data.code; select * from watch;
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