On Mon, May 1, 2017 at 11:21 AM, Max Wang <mw...@1080agile.com> wrote:
> Hi All, > > > > We have a PostgreSQL database. There are 26 tables and we use serial type > as primary key. We had a insert error as “duplicate key value violates > unique constraint, DETAIL: Key (id)=(1) already exists.” one weeks ago. I > checked and found all tables’ id were reset to 1. > > > > I checked database log and did not find any useful information. I am not > sure why this happen. The only script which connect to this database is a > Python script and only do normal insert/update/delete actions. > > > > Please give me some suggestions if you happen to know something about this > issue. I appreciate any feedback you might have. > > > > I am very new to PostgreSQL and this mail list. Please let me know if I > did not something wrong. > > > > Thank you. > > > > Regards, > > Max > By any chance, has it to do anything with the Cycle option of sequences: https://www.postgresql.org/docs/9.5/static/sql-createsequence.html
