Re: primary keys
От | Huub |
---|---|
Тема | Re: primary keys |
Дата | |
Msg-id | aqdtbn$1vnl$1@news.hub.org обсуждение исходный текст |
Ответ на | Re: primary keys (terry@greatgulfhomes.com) |
Список | pgsql-sql |
terry@greatgulfhomes.com wrote: > A table can only have ONE primary key. It can have additional indexes > with > a UNIQUE restriction, thereby forcing the second field to be as good as a > primary key. > > That is probably what you are looking for, however, you can also in PG > Admin > II select multiple fields as being the member of the primary key. > > > Terry Fielder > Network Engineer > Great Gulf Homes / Ashton Woods Homes > terry@greatgulfhomes.com > > > > > >-----Original Message----- > >From: pgsql-sql-owner@postgresql.org > >[mailto:pgsql-sql-owner@postgresql.org]On Behalf Of Huub > >Sent: Wednesday, November 06, 2002 9:19 AM > >To: pgsql-sql@postgresql.org > >Subject: [SQL] primary keys > > > > > >Hi, > > > >I want to create a table which has 2 columns, and both > >columns have to > >be primary key (or: together they are the primary key). How can I do > >this using SQL? Using pgAdminII for Postgres7.2.2 on RH8. > > > >Thanks > > > >Huub > > > > > >---------------------------(end of > >broadcast)--------------------------- > >TIP 4: Don't 'kill -9' the postmaster > > > > > > ---------------------------(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 Thanks..problem solved.. Huub
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