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@xxxxxxxxxxxxxxx> 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 > >
