Re: contracting tables
От | Jeff Eckermann |
---|---|
Тема | Re: contracting tables |
Дата | |
Msg-id | 20011130154536.41315.qmail@web20809.mail.yahoo.com обсуждение исходный текст |
Ответ на | contracting tables ("Peter T. Brown" <peter@memeticsystems.com>) |
Список | pgsql-sql |
Thinking about that some more: SELECT INTO table2 DISTINCT * FROM table1; TRUNCATE table1; INSERT INTO table1 SELECT * FROM table2; DROP TABLE2; may be easiest, if you want to preserve table1, and need distinct row values. --- "Peter T. Brown" <peter@memeticsystems.com> wrote: > Hi-- > > I have a table with many records, some of which are > duplicates (there is no > unique constraints). How can I contract this table > to remove any of these > duplicate records? Like when using GROUP BY in a > select statement, except > that I want to just remove the extra entries from > this table directly... Any > ideas? > > > Thanks, > > Peter Brown > > > ---------------------------(end of > broadcast)--------------------------- > TIP 3: if posting/reading through Usenet, please > send an appropriate > subscribe-nomail command to majordomo@postgresql.org > so that your > message can get through to the mailing list cleanly __________________________________________________ Do You Yahoo!? Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. http://geocities.yahoo.com/ps/info1
В списке pgsql-sql по дате отправления: