Re: SQL99 Hierarchical queries

From: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>
To: Evgen Potemkin <eugen(dot)potemkin(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: SQL99 Hierarchical queries
Date: 2005-05-05 01:48:44
Message-ID: 42797B7C.6090502@familyhealth.com.au
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Hi Evgen,

I just keep pinging this patch thread every once in a while to make sure
it doesn't get forgotten :)

How is the syncing with 8.1 CVS coming along?

Chris

Evgen Potemkin wrote:
> Hi hackers!
>
> I have done initial implementation of SQL99 WITH clause (attached).
> It's now only for v7.3.4 and haven't a lot of checks and restrictions.
> It can execute only simple WITH queries like
> WITH tree AS (SELECT id,pnt,name,1::int AS level FROM t WHERE id=0
> UNION SELECT t.id,t.pnt,t.name,tree.level+1 FROM t JOIN tree ON
> tree.id=t.pnt ) SELECT * FROM tree;
> It would be great if someone with knowledge of Pg internals can make a
> kind of code review and make some advices how to better implement all
> this.
>
> Regards, Evgen.
>
>
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