Re: [SQL] possible bug? - Mailing list pgsql-sql

From Bruce Momjian
Subject Re: [SQL] possible bug?
Date
Msg-id 199910260458.AAA20296@candle.pha.pa.us
Whole thread Raw
In response to Re: [SQL] possible bug?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-sql
> Clayton Cottingham <drfrog@smartt.com> writes:
> > can anyone confirm this?
> > create index idx on table using btree(column  );
> > cluster idx on table;
> > drop index idx;
> > seems to drop all permissions and indexes
> > on the table involved
> 
> "cluster" deliberately drops all other indexes on the target table,
> according to the source code.  (If this isn't mentioned in the
> documentation, it should be.)
> 
> It looks like the implementation method is to build a whole new
> table, destroy the old, and rename the new into place.  That probably
> explains why the permissions get lost --- I suppose triggers &etc
> are not carried over either, and heaven help you if you try to cluster
> a member of an inheritance hierarchy...
> 
> I have no idea how hard it'd be to make a less destructive version
> of "cluster".  Another item for the TODO list, I guess.
> 

Already on TODO list.  Text added to make it clearer.


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