Horton

Re: delta relations in AFTER triggers

Jim Nasby <jim.nasby@bluetreble.com>

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From: Jim Nasby <Jim.Nasby@BlueTreble.com>
To: Craig Ringer <craig@2ndquadrant.com>, Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Kevin Grittner <kgrittn@gmail.com>, Michael Paquier <michael.paquier@gmail.com>, Robert Haas <robertmhaas@gmail.com>, David Fetter <david@fetter.org>, Kevin Grittner <kgrittn@ymail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Heikki Linnakangas <hlinnakangas@vmware.com>, Amit Khandekar <amit.khandekar@enterprisedb.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2016-11-22T23:02:59Z
Lists: pgsql-hackers 
On 11/21/16 3:49 AM, Craig Ringer wrote:
>> After going through that experience, I now agree with Kevin: an
>> > interface where a new SPI interface lets PLs push a named tuplestore
>> > into the SPI connection to make it available to SQL seems like the
>> > simplest and tidiest way.
> That also offers a handy step on the path toward table-valued
> variables and pipelined functions, both of which would be _really_
> nice for PL/PgSQL users.

FWIW, I expect at some point we'd like the ability to index tuplestores 
as well.
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
855-TREBLE2 (855-873-2532)

Commits

  1. Don't permit transition tables with TRUNCATE triggers.

  2. Pass EXEC_FLAG_REWIND when initializing a tuplestore scan.

  3. Faster expression evaluation and targetlist projection.

  4. Remove obsoleted code relating to targetlist SRF evaluation.

  5. Implement syntax for transition tables in AFTER triggers.