Horton

Re: Allowing extensions to supply operator-/function-specific info

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Paul Ramsey <pramsey@cleverelephant.ca>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2019-03-04T22:52:23Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Allow extensions to generate lossy index conditions.

  2. Build out the planner support function infrastructure.

  3. Create the infrastructure for planner support functions.

  4. Disable transforms that replaced AT TIME ZONE with RelabelType.

Paul Ramsey <pramsey@cleverelephant.ca> writes:
> Gotcha, done and now have an implementation that passes all our regression tests.

Very cool!  So the next step, I guess, is to address your original problem
by cranking up the cost estimates for these functions --- have you tried
that yet?  In principle you should be able to do that and not have any
bad planning side-effects, but this is all pretty new territory so maybe
some problems remain to be ironed out.

BTW, if you'd like me to review the code you added for this, I'd be happy
to do so.  I've never looked at PostGIS' innards, but probably I can make
sense of the code for this despite that.

			regards, tom lane