How to Reset Auto Increment in Postgres

Reset or change auto increment in postgres using ALTER SEQUENCE command. To use that command you can determine which table and column that you wil change.

For example you have roles table and inside that role table you want reset the id column.

You can use this simple query below to reset auto increment in postgres.

ALTER SEQUENCE roles_id_seq RESTART WITH 1

note:

the _seq is required, you cannot remove it. So the pattern is {table}_{column}_seq.

In postgres you cannot change to 0, the minimum value is 1.