Re: How to create primary key
От | Ron Johnson |
---|---|
Тема | Re: How to create primary key |
Дата | |
Msg-id | 47305AFF.7010908@cox.net обсуждение исходный текст |
Ответ на | Re: How to create primary key (Richard Huxton <dev@archonet.com>) |
Список | pgsql-general |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 11/06/07 03:15, Richard Huxton wrote: > Reg Me Please wrote: >> Hi all. >> >> What'd be the syntax to create a primary key on an already build table? > > Hmm - so you want to sort of alter a table and add a primary key > constraint to an existing column? While I understand your feelings, I must disagree. That's because adding a secondary index does not have the same sort of syntax: ALTER TABLE foo ADD INDEX (some, existing, columns); > ALTER TABLE my_table ADD PRIMARY CONSTRAINT (existing_column); > > All in the manuals: > http://www.postgresql.org/docs/8.2/static/sql-altertable.html > - -- Ron Johnson, Jr. Jefferson LA USA Give a man a fish, and he eats for a day. Hit him with a fish, and he goes away for good! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHMFr/S9HxQb37XmcRAuqfAKCzmYeBU4dVXorvQxBUYIoQuw9YcgCeOve1 NUtFo4N/sC4julpZmMvLN0s= =qcCO -----END PGP SIGNATURE-----
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