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RE: possible to have a primary key with a bitmap indx?

From: Mladen Gogala <mladen_at_wangtrading.com>
Date: Tue, 23 Sep 2003 14:29:40 -0800
Message-ID: <F001.005D0DB5.20030923142940@fatcity.com>


Yes, but you can enforce a PK constraint without a unique index. If you take a look at the code, you'll see that my index is also nonunique. Theoretically,
there shouldn't be much difference between non-unique indexes and bitmap indexes. Practically, there is.

--
Mladen Gogala
Oracle DBA 




> -----Original Message-----
> From: ml-errors_at_fatcity.com [mailto:ml-errors_at_fatcity.com] On
> Behalf Of Khedr, Waleed
> Sent: Tuesday, September 23, 2003 5:50 PM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: possible to have a primary key with a bitmap indx?
>
>
> Restrictions on Unique Indexes
> You cannot specify both UNIQUE and BITMAP
>
> -----Original Message-----
> Sent: Tuesday, September 23, 2003 5:35 PM
> To: Multiple recipients of list ORACLE-L
>
>
> It's not possible:
>
>
>
> SQL> create bitmap index emp_empno_b on emp(empno);
>
> Index created.
>
> SQL> alter table emp add constraint emp_pk primary key(empno) using
> SQL> index
> emp_empno_b novalidate;
> alter table emp add constraint emp_pk primary key(empno)
> using index emp_empno_b novalidate
> *
> ERROR at line 1:
> ORA-01418: specified index does not exist
>
>
> SQL> drop index emp_empno_b;
>
> Index dropped.
>
> SQL> create index emp_empno_b on emp(empno);
>
> Index created.
>
> SQL> alter table emp add constraint emp_pk primary key(empno) using
> SQL> index
> emp_empno_b novalidate;
>
> Table altered.
>
> SQL>
>
> --
> Mladen Gogala
> Oracle DBA
>
>
>
> > -----Original Message-----
> > From: ml-errors_at_fatcity.com [mailto:ml-errors_at_fatcity.com] On
> > Behalf Of rgaffuri_at_cox.net
> > Sent: Tuesday, September 23, 2003 4:55 PM
> > To: Multiple recipients of list ORACLE-L
> > Subject: possible to have a primary key with a bitmap indx?
> >
> >
> > is it possible to have a primary key that is enforced with a
> > bitmap index?
> >
> > if so what is the syntax?
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.net
> > --
> > Author: <rgaffuri_at_cox.net
> > INET: rgaffuri_at_cox.net
> >
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> --
> Author: Mladen Gogala
> INET: mladen_at_wangtrading.com
>
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> Author: Khedr, Waleed
> INET: Waleed.Khedr_at_FMR.COM
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Note: This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Wang Trading LLC and any of its subsidiaries each reserve the right to monitor all e-mail communications through its networks. Any views expressed in this message are those of the individual sender, except where the message states otherwise and the sender is authorized to state them to be the views of any such entity. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mladen Gogala INET: mladen_at_wangtrading.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Received on Tue Sep 23 2003 - 17:29:40 CDT

Original text of this message

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