Re: [GENERAL] ERROR: JoinClauseSelectivity

ALTER TABLE ADD COLUMN had a problem where selectivity was set to some
strange number. This should be fixed in newer releases.

> Hi Bruce,
>
> >
> >VACUUM ANALYZE the table.
> >
>
> I did this and now my query is working. I don't understand
> what exactly VACUUM ANALYZE is doing and why I was getting
> the error message. Could you please explain.Thanks
> -Sheila
>
>
> > >
> > > I'm trying to do a simple join query and I get an error message.
> > > My tables are :
> > > agency(agencyid serial, agency_name text, address text, ...)
> > > groupleader(leaderid serial, agency_name text, phonenum text , ...)
> > >
> > > The query :
> > > SELECT agencyid FROM agency, groupleader WHERE
> > > agency.agency_name=groupleader.agency_name;
> > >
> > > The error message :
> > > ERROR: JoinClauseSelectivity: bad value 2.450299
> > >
> > > I tried the query in other forms such as:
> > > SELECT * FROM agency, groupleader WHERE
> > > agency.agency_name=groupleader.agency_name;
> > > and
> > > SELECT * FROM agency WHERE
> > > agency_name=groupleader.agency_name;
> > >
> > > I get the same error message. What am I doing wrong here ?
> > >
> > > Thanks for your help,
> > > -Sheila
> > > ______________________________________________________
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> > >
> > > ************
> > >
> > >
> >
> >
> >--
> > Bruce Momjian | http://www.op.net/~candle
> > pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
> > + If your life is a hard drive, | 830 Blythe Avenue
> > + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
>
>

--
Bruce Momjian | http://www.op.net/~candle
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026