Re: [HACKERS] Re: [BUGS] General Bug Report: Bug in optimizer

Bruce Momjian wrote:
> 
> So, yes, I suppose there is an inconsistency there.  Zero-sized
> tables(according to vacuum), use index, while tables with some data
> don't use index.
> 
> How does the system know there is a row in there if you didn't run
> vacuum?  That confuses me.

Create index updates ntuples & npages in pg_class...

Vadim