Horton

Re: SQL:2011 application time

Peter Eisentraut <peter@eisentraut.org>

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From: Peter Eisentraut <peter@eisentraut.org>
To: Paul Jungwirth <pj@illuminatedcomputing.com>, jian he <jian.universality@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2023-11-23T09:08:54Z
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. Rename gist stratnum support function

  2. Remove support for temporal RESTRICT foreign keys

  3. Cache NO ACTION foreign keys separately from RESTRICT foreign keys

  4. Fix NO ACTION temporal foreign keys when the referenced endpoints change

  5. Improve whitespace in without_overlaps test

  6. Tests for logical replication with temporal keys

  7. Support for GiST in get_equal_strategy_number()

  8. Make the conditions in IsIndexUsableForReplicaIdentityFull() more explicit

  9. Replace get_equal_strategy_number_for_am() by get_equal_strategy_number()

  10. Improve internal logical replication error for missing equality strategy

  11. Simplify IsIndexUsableForReplicaIdentityFull()

  12. Fix ALTER TABLE / REPLICA IDENTITY for temporal tables

  13. doc: Update pg_constraint.conexclop docs for WITHOUT OVERLAPS

  14. doc: Add PERIOD to ALTER TABLE reference docs

  15. doc: Add WITHOUT OVERLAPS to ALTER TABLE reference docs

  16. Add temporal FOREIGN KEY contraints

  17. Add temporal PRIMARY KEY and UNIQUE constraints

  18. Add stratnum GiST support function

  19. Avoid crashing when a JIT-inlined backend function throws an error.

  20. Revert temporal primary keys and foreign keys

  21. Fix ON CONFLICT DO NOTHING/UPDATE for temporal indexes

  22. Add test for REPLICA IDENTITY with a temporal key

  23. Use half-open interval notation in without_overlaps tests

  24. Use daterange and YMD in without_overlaps tests instead of tsrange.

  25. Rename pg_constraint.conwithoutoverlaps to conperiod

  26. Fix comment on gist_stratnum_btree

  27. Add missing TAP test name

  28. Improve error handling of HMAC computations

  29. Rename functions to avoid future conflicts

On 20.11.23 08:58, Peter Eisentraut wrote:
> On 17.11.23 19:39, Paul Jungwirth wrote:
>> But I feel the overall approach is wrong: originally I used hardcoded 
>> "=" and "&&" operators, and you asked me to look them up by strategy 
>> number instead. But that leads to trouble with core gist types vs 
>> btree_gist types. The core gist opclasses use RT*StrategyNumbers, but 
>> btree_gist creates opclasses with BT*StrategyNumbers.
> 
> Ouch.
> 
> That also provides the answer to my question #2 here: 
> https://www.postgresql.org/message-id/6f010a6e-8e20-658b-dc05-dc9033a694da%40eisentraut.org
> 
> I don't have a good idea about this right now.  Could we just change 
> btree_gist perhaps?  Do we need a new API for this somewhere?

After further thought, I think the right solution is to change 
btree_gist (and probably also btree_gin) to use the common RT* strategy 
numbers.  The strategy numbers are the right interface to determine the 
semantics of index AM operators.  It's just that until now, nothing 
external has needed this information from gist indexes (unlike btree, 
hash), so it has been a free-for-all.

I don't see an ALTER OPERATOR CLASS command that could be used to 
implement this.  Maybe we could get away with a direct catalog UPDATE. 
Or we need to make some DDL for this.

Alternatively, this could be the time to reconsider moving this into core.