Re: Insert failure on serial

Warren Seltzer wrote:
> PostgreSQL 8.1.3 on i686-pc-mingw32
> Windows XP SP2
>
> Summary of Insert failure (There IS NO DUPLICATE KEY):
> depot_development=# INSERT INTO line_items ("order_id", "product_id", "quantity",
> "unit_price") VALUES(1, 2, 2, 989.99);
> ERROR: duplicate key violates unique constraint "line_items_pkey"

The problem is that the sequence attached to the "id" column is lower
than the values actually present in the column. Try doing
SELECT setval(pg_get_serial_sequence('line_items', 'id'), 16);

and see if it fixes your problem.

Now, how did the sequence got out of sync? Did you insert values to the
id column by hand?

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.