Re: Tricky bugs in concurrent index build

Ühel kenal päeval, K, 2006-08-23 kell 11:05, kirjutas Hannu Krosing:
> Ühel kenal päeval, T, 2006-08-22 kell 16:48, kirjutas Tom Lane:
> > "Joshua D. Drake" <jd@commandprompt.com> writes:
> > >> It's fairly clear that we could support concurrent builds of nonunique
> > >> indexes, but is that enough of a use-case to justify it?
> > 
> > > I believe there would be. Most PostgreSQL users I run into, develop in 
> > > production, which means being able to add an index they forgot when 
> > > doing query analysis.
> > 
> > True, unique constraints are usually something you should get right to
> > start with.  But it'll be annoying if we can do everything BUT that :-(
> 
> Maybe we could find a way to build a non-unique index first and then
> convert it to a unique one later, in yet another pass ?

Or even add ALTER INDEX myindex ADD/DROP UNIQUE; command

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