Horton

Re: support for MERGE

Justin Pryzby <pryzby@telsasoft.com>

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From: Justin Pryzby <pryzby@telsasoft.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2021-11-13T22:58:37Z
Lists: pgsql-hackers

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On Fri, Nov 12, 2021 at 02:57:57PM -0300, Alvaro Herrera wrote:
> Here's a new version.  Many of the old complaints have been fixed;

I should've replied to this newer message.

I also read through the code a bit and have some more language fixes, mostly.

I ran sqlsmith for a few hours with no apparent issue - good.

It seems like there's an opened question about how RULES should be handled?

-- 
Justin

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.