Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604

> On Mon, 10 May 1999, Bruce Momjian wrote:
> 
> > Date: Mon, 10 May 1999 12:48:15 -0400 (EDT)
> > From: Bruce Momjian <maillist@candle.pha.pa.us>
> > To: Tom Lane <tgl@sss.pgh.pa.us>
> > Cc: Oleg Bartunov <oleg@sai.msu.su>, pgsql-hackers@postgreSQL.org
> > Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604
> > 
> > 
> > Is this a valid item?
> > 
> 
> After compilation of current cvs at home I test this and it works.
> But explain shows that select will not use indices, which exists !
> select station_id from metro_stations except select  metro_id from work_flats;

Indexes aren't much use if you don't have a WHERE restriction, no?

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