Delete duplicate data records in mysql database
- 2020-05-06 11:48:19
- OfStack
The following method is used to delete, assuming that the duplicate is the title field
in the test database
in the test database
create table bak as (select * from test group by title having count(*)=1);
insert into bak (select * from test group by title having count(*)>1);
truncate table test;
insert into test select * from bak;