| From: | Kevin Grittner <kgrittn(at)ymail(dot)com> |
|---|---|
| To: | David Fetter <david(at)fetter(dot)org> |
| Cc: | Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: delta relations in AFTER triggers |
| Date: | 2014-06-15 16:33:46 |
| Message-ID: | 1402850026.55960.YahooMailNeo@web122303.mail.ne1.yahoo.com |
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| Lists: | pgsql-hackers |
David Fetter <david(at)fetter(dot)org> wrote:
> Any chance we might be able to surface the old version for the
> case of UPDATE ... RETURNING?
Not as part of this patch.
Of course, once delta relations are available, who knows what
people might do with them. I have a hard time imagining exactly
how you would expose what you're talking about, but a column to
distinguish before and after images might work. Incremental
maintenance of materialized views will require that in the form of
a count column with -1 for deleted and +1 for inserted, so there
might be some common ground when we get to that.
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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