Horton

Re: support for MERGE

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Pg Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-01-18T16:08:53Z
Lists: pgsql-hackers 
On Thu, Dec 31, 2020 at 8:48 AM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> Here's a rebase of Simon/Pavan's MERGE patch to current sources.  I
> cleaned up some minor things in it, but aside from rebasing, it's pretty
> much their work (even the commit message is Simon's).

It's my impression that the previous discussion concluded that their
version needed pretty substantial design changes. Is there a plan to
work on that? Or was some of that stuff done already?

-- 
Robert Haas
EDB: http://www.enterprisedb.com

Commits

  1. Doc fixes for MERGE statement

  2. MERGE docs adjustments

  3. Link to MVCC docs in MERGE docs

  4. Fix EXPLAIN MERGE output when no tuples are processed

  5. Make EXPLAIN MERGE output format more compact

  6. Add support for MERGE SQL command

  7. Split ExecUpdate and ExecDelete into reusable pieces

  8. Add API of sorts for transition table handling in trigger.c

  9. Represent Lists as expansible arrays, not chains of cons-cells.