Re: [SQL] Duplicate rows
| От | Oleg Broytmann |
|---|---|
| Тема | Re: [SQL] Duplicate rows |
| Дата | |
| Msg-id | Pine.LNX.3.96.SK.980516132904.20715B-100000@torus.comus.ru обсуждение исходный текст |
| Ответ на | Duplicate rows (Andy Lewis <alewis@mpsi.net>) |
| Ответы |
Re: [SQL] Duplicate rows
|
| Список | pgsql-sql |
Hello. On Fri, 15 May 1998, Andy Lewis wrote: > I have a postgres db with at least 1000 rows in it. I'd like to know if its > possible to detect duplicate values of a column if I don't know which values > that are dups? Try to create UNIQUE index on a problematic column. If creating the unique index failes - there are duplicates (providing that creating the index wouldn't fail by other reasons - disk full, memory shortage, etc.) Oleg. ---- Oleg Broytmann http://members.tripod.com/~phd2/ phd2@earthling.net Programmers don't die, they just GOSUB without RETURN.
В списке pgsql-sql по дате отправления: