UPDATE tuples with a sub-select - Mailing list pgsql-general

From Thomas Kellerer
Subject UPDATE tuples with a sub-select
Date
Msg-id gf14f9$tin$1@ger.gmane.org
Whole thread Raw
Responses Re: UPDATE tuples with a sub-select  (Gerhard Heift <ml-postgresql-20081012-3518@gheift.de>)
Re: UPDATE tuples with a sub-select  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: UPDATE tuples with a sub-select  (Gerhard Heift <gheift@kawo1.rwth-aachen.de>)
List pgsql-general
Hi,

are there any plans to support updating a tuple using a sub-select in one of the future versions.

e.g, something like:

UPDATE report_table
   SET (order_count,order_value) = (SELECT count(*), sum(amount)
                                    FROM order o
                                    WHERE o.customer_id = report_table.customer_id);

I know it's currently not possible (so we need to revert to two sub-selects) but I was wondering if this somewhere on
the"roadmap" 

Regards
Thomas

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