Re: Why I can't have primary key on field that has index?

From: Jan H Malmberg <jhma_at_gbg.ifsab.se>
Date: 1998/09/18
Message-ID: <36020394.0@d2o61.telia.com>#1/1

The primary key is implemented as a unique index. This index is automaticly created when the table is created.

badstreetboy_at_my-dejanews.com wrote in message <6tsamo$8o3$1_at_nnrp1.dejanews.com>...
>I try to create a table by:
>
>CREATE TABLE t1(
> f1 INTEGER NOT NULL PRIMARY KEY,
> f2 INTEGER NOT NULL);
>CREATE INDEX f1_index ON t1(
> f1);
>
>Then it gives me an err:
>
>ERROR at line 2:
>ORA-01408: such column list already indexed
>
>Why this happen? I would appreciate if anyone can help me. Thanks!
>
>
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Received on Fri Sep 18 1998 - 00:00:00 CDT