From: | "Vadim B(dot) Mikheev" <vadim(at)sable(dot)krasnoyarsk(dot)su> |
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To: | Jan Wieck <jwieck(at)debis(dot)com> |
Cc: | PostgreSQL HACKERS <pgsql-hackers(at)postgreSQL(dot)org> |
Subject: | Re: [HACKERS] Open 6.3 issues |
Date: | 1998-02-24 01:19:52 |
Message-ID: | 34F22038.64B6E830@sable.krasnoyarsk.su |
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Lists: | pgsql-hackers |
Jan Wieck wrote:
>
> > Views on aggregates fail
>
> Uh oh - Aggregates require a group by clause in the select.
> This is correctly copied into the query action in the views
> pg_rewrite entry. But the rewrite handler doesn't insert it
> into the parsetree. Thus a wrong execution plan in built.
>
> I'll try some things, but expect to get into trouble if the
> select from the view contains it's own grouping clauses.
There is another way of VIEW implementation: put VIEW' query
as subselect into FROM clause. The last feature is not implemented
yet. It's just a thought...
Vadim
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