Re: Difference between Access97 and PostgreSQL

> -----Original Message-----
> From: Josh Berkus [mailto:josh@agliodbs.com]
> Sent: 31 January 2002 00:58
> To: Yan Bai; pgsql-sql@postgresql.org
> Subject: Re: Difference between Access97 and PostgreSQL
> 
> 
> Annie,
> 
> > My question may out of the range of this forum.
> 
> Well, yes.  But, since I'm a nice guy, I'll answer your question even
>  though it does not relate to Postgres ... if you promise not to do it
>  again!  In the future, send this question to a more appropriate list,
>  such as PSQL-ODBC, where they discuss Paotgres & MS Access.
> 
> > When I run the following query under postgreSQL and Access2000, it
> >  works well. But Access97 cannot accept it. I got the error message
> >  as 'syntax error near FROM', it seems like in Access97, 
> there cannot
> >  have a subquery after 'FROM'
> > 
> > --------------------------------------------------
> > SELECT temp.rating, temp.avgage
> > FROM (SELECT s.rating, AVG(s.age) as avgage
> >      FROM sailors s GROUP BY s.rating) as temp
> > --------------------------------------------------
> > 
> 
> You are exactly correct.  MS Access 97 does not support sub-queires in
>  the FROM clause.  THe only sub-queries supported by Access 97 are
>  sub-queries in the WHERE clause.

With this sort of problem (I also vaguely recall ahving a problem with a
union) I tend to make another query (as in an MS Access query that anyone
else would call a view) and use it in the from clause.
Cheers,
- Stuart