I'm a little doubtful about the value of 'keep index'. Consider the scenarios:
unique constraint, non-unique index: - "keep index" redundant because its kept anyway unique constraint, unique index: - "keep index" redundant because effectively retains the constraint anyway (because you still can't insert dups) So far, the only use for KEEP INDEX I've found is the scenario where you: - decided that column(s) X was the primary key - created a unique index on it - created a primary key constraint on it - loaded the data - decided actually X was NOT the primary key, just a unique value - decided that X could allow nulls as well - dropped the primary kept, kept the index and then added a unique constraint... I would contend that this is a rare occurrence ? Cheers Connor --- Rachel Carmichael <[EMAIL PROTECTED]> wrote: > sigh. I need to find time to read ALL the docs. > Yeah, that'll happen. > If I can find a parallel universe where time runs at > a different rate. > > Thanks, I'll test this out as well. > > > --- Arup Nanda <[EMAIL PROTECTED]> wrote: > > In 9.2, you can keep the index by using the KEEP > INDEX key words. > > > > ALTER TABLE XXX DROP CONSTRAINT PK_XXX KEEP INDEX > > > > This will keep the index but drop the constraint. > Talk about having > > your > > cake and eating it too...;) > > > > HTH > > > > Arup > > ----- Original Message ----- > > To: "Multiple recipients of list ORACLE-L" > <[EMAIL PROTECTED]> > > Sent: Friday, December 27, 2002 4:39 PM > > > > > > > it'll have to wait until Monday, I'm not at work > until then. I'll > > try > > > it with a non-unique then > > > > > > Hey, if it works, it saves me tons of time, I > learn something new > > and I > > > had fun developing the single SQL statement to > rebuild the > > constraint > > > and index. Win-win > > > > > > > > > Rachel > > > > > > --- Denny Koovakattu <[EMAIL PROTECTED]> > wrote: > > > > > > > > > > > > I don't have access to 9.2.0.1 right now. > But can you try > > creating > > > > a non- > > > > unique index instead of the unique index. If > you create a unique > > > > index, it gets > > > > dropped. That's the behavior on 8.1.x also. > But if it's a > > non-unique > > > > index, it > > > > shouldn't get dropped. > > > > > > > > Regards, > > > > Denny > > > > > > > > Quoting Rachel Carmichael > <[EMAIL PROTECTED]>: > > > > > > > > > 9.2.0.1 Solaris, and yes, it does drop it > > > > > > > > > > I created a unique index in the primary key > columns > > > > > I created the primary key constraint without > specifying an > > index > > > > > I checked that the index existed, it did > > > > > I dropped the primary key constraint > > > > > I checked that the index existed, it didn't > > > > > > > > > > try it.... I tried various combinations > before posting this > > note > > > > > > > > > > > > > > > --- Denny Koovakattu <[EMAIL PROTECTED]> > wrote: > > > > > > > > > > > > > > > > > > If you build a separate index to enforce > the primary key, > > > > Oracle > > > > > > shouldn't > > > > > > drop it when you disable or drop the > primary key. > > > > > > > > > > > > Regards, > > > > > > Denny > > > > > > > > > > > > Quoting Rachel Carmichael > <[EMAIL PROTECTED]>: > > > > > > > > > > > > > Here's a reason: > > > > > > > > > > > > > > have you ever tried to find the three > duplicate rows in a > > 12 > > > > > > million > > > > > > > row table without using the primary key > constraint? I've > > had to > > > > > > > disable > > > > > > > or drop the constraint in order to use > the exceptions > > table. > > > > Once > > > > > I > > > > > > do > > > > > > > that, even if I've built a separate > index that enforces the > > > > > primary > > > > > > > key > > > > > > > constraint, Oracle drops the index. So I > HAVE to rebuild > > it. If > > > > I > > > > > > > allow > > > > > > > the index to be rebuilt when I re-enable > the primary key > > > > > > constraint, > > > > > > > it > > > > > > > builds it in the default tablespace of > the table owner, not > > > > where > > > > > I > > > > > > > want it. > > > > > > > > > > > > > > if anyone has a better way to fix this > problem, I'm more > > than > > > > > happy > > > > > > to > > > > > > > hear it! It's a data warehouse and the > third party app has > > a > > > > bug > > > > > we > > > > > > > can't find and on occasion sqlloads (via > direct path) > > duplicate > > > > > > rows > > > > > > > > > > > > > > Rachel > > > > > > > > > > > > > > --- Jared Still <[EMAIL PROTECTED]> > wrote: > > > > > > > > > > > > > > > > Though I have published a script for > determining indexes > > that > > > > > > > > need to be rebuilt, and then > rebuilding them, I have to > > say > > > > > that > > > > > > > > this is almost never necessary. > > > > > > > > > > > > > > > > Why are you rebuilding indexes? About > the only reason > > for > > > > ever > > > > > > > > doing so is that the BLEVEL >= 5. > > > > > > > > > > > > > > > > goto asktom.oracle.com, and do a > search on 'index > > rebuild'. > > > > > > > > > > > > > > > > Currently, the third article may be of > interest. > > > > > > > > > > > > > > > > Jared > > > > > > > > > > > > > > > > On Thursday 26 December 2002 12:24, > Richard Huntley > > wrote: > > > > > > > > > Anyone have any useful scripts for > doing this? > > > > > > > > > > > > > > > > > > TIA, > > > > > > > > > Rich > > > > > > > > > > > > > > > > > ---------------------------------------- > > > > > > > > Content-Type: text/html; > charset="iso-8859-1"; > > > > name="Attachment: > > > > > > 1" > > > > > > > > Content-Transfer-Encoding: 7bit > > > > > > > > Content-Description: > > > > > > > > > ---------------------------------------- > > > > > > > > -- > > > > > > > > Please see the official ORACLE-L FAQ: > > http://www.orafaq.net > > > > > > > > -- > > > > > > > > Author: Jared Still > > > > > > > > INET: [EMAIL PROTECTED] > > > > > > > > > > > > > > > > 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: [EMAIL PROTECTED] (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). > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > __________________________________________________ > > > > > > > Do you Yahoo!? > > > > > > > Yahoo! Mail Plus - Powerful. Affordable. > Sign up now. > > > > > > > http://mailplus.yahoo.com > > > > > > > -- > > > > > > > Please see the official ORACLE-L FAQ: > http://www.orafaq.net > > > > > > > -- > > > > > > > Author: Rachel Carmichael > > > > > > > INET: [EMAIL PROTECTED] > > > > > > > > > > > > > > Fat City Network Services -- > 858-538-5051 > > > > > http://www.fatcity.com > > > > > > > San Diego, California -- Mailing > list and web > > hosting > > > > > > services > > > > > > > > > > === message truncated === > > > __________________________________________________ > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up > now. > http://mailplus.yahoo.com > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.net > -- > Author: Rachel Carmichael > INET: [EMAIL PROTECTED] > > 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: [EMAIL PROTECTED] (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). > ===== Connor McDonald http://www.oracledba.co.uk http://www.oaktable.net "GIVE a man a fish and he will eat for a day. But TEACH him how to fish, and...he will sit in a boat and drink beer all day" __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
