Re: Removing duplicate rows in table

If you don't mind taking the time to swap tables, you can always do an INSERT ... SELECT DISTINCT <fields> into a new table, and then swap it with the existing table.

> On Sep 10, 2024, at 08:07, Rich Shepard <rshepard(at)appl-ecosys(dot)com> wrote:
>
> I've no idea how I entered multiple, identical rows in a table but I want to
> delete all but one of these rows.
>
> Here's an example:
>
> bustrac=# select * from projects where proj_nbr = '4242.01';
> proj_nbr | proj_name | start_date | end_date | description | notes ----------+----------------+------------+------------+---------------+-------
> 4242.01 | Expert witness | 2008-10-15 | 2008-10-28 | Consol Energy |
> 4242.01 | Expert witness | 2008-10-15 | 2008-10-28 | Consol Energy |
> 4242.01 | Expert witness | 2008-10-15 | 2008-10-28 | Consol Energy |
> 4242.01 | Expert witness | 2008-10-15 | 2008-10-28 | Consol Energy | (4 rows)
>
> How do I clean this up so there's only a single row for this project number?
>
> TIA,
>
> Rich
>
>