Re: POC, WIP: OR-clause support for indexes

Alena Rybakina <a.rybakina@postgrespro.ru>

From: Alena Rybakina <a.rybakina@postgrespro.ru>

To: Alexander Korotkov <aekorotkov@gmail.com>

Cc: Andrei Lepikhov <lepihov@gmail.com>, Nikolay Shaplov <dhyan@nataraj.su>, pgsql-hackers@lists.postgresql.org, jian he <jian.universality@gmail.com>, Robert Haas <robertmhaas@gmail.com>, pgsql-hackers@postgresql.org, Peter Geoghegan <pg@bowt.ie>, Marcos Pegoraro <marcos@f10.com.br>, teodor@sigaev.ru, Peter Eisentraut <peter@eisentraut.org>, Ranier Vilela <ranier.vf@gmail.com>

Date: 2024-08-24T13:36:24Z

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 →

Make group_similar_or_args() reorder clause list as little as possible
- 775a06d44c04 18.0 landed
Allow usage of match_orclause_to_indexcol() for joins
- 627d63419e22 18.0 landed
Skip not SOAP-supported indexes while transforming an OR clause into SAOP
- 5bba0546eecb 18.0 landed
Remove the wrong assertion from match_orclause_to_indexcol()
- d4d11940df94 18.0 landed
Teach bitmap path generation about transforming OR-clauses to SAOP's
- ae4569161a27 18.0 landed
Transform OR-clauses to SAOP's during index matching
- d4378c0005e6 18.0 landed
Fix the value of or_to_any_transform_limit in postgresql.conf.sample
- 2af75e117478 17.0 landed
Transform OR clauses to ANY expression
- 72bd38cc99a1 17.0 landed
MergeAttributes code deduplication
- 64444ce071f6 17.0 cited
SEARCH and CYCLE clauses
- 3696a600e229 14.0 cited
Improve estimation of OR clauses using extended statistics.
- 25a9e54d2db3 14.0 cited
Teach btree to handle ScalarArrayOpExpr quals natively.
- 9e8da0f75731 9.2.0 cited
Revise collation derivation method and expression-tree representation.
- b310b6e31ce5 9.1.0 cited
Instead of trying to force WHERE clauses into CNF or DNF normal form,
- 9888192fb773 8.0.0 cited

Sorry again.

The link to letter - - 
https://www.postgresql.org/message-id/759292d5-cb51-4b12-89fa-576c1d9b374d%40postgrespro.ru

Patch - 
https://www.postgresql.org/message-id/attachment/162897/v28-Transform-OR-clauses-to-ANY-expression.patch


On 24.08.2024 16:23, Alexander Korotkov wrote:
> On Sat, Aug 24, 2024 at 4:08 PM Alena Rybakina
> <a.rybakina@postgrespro.ru> wrote:
>> On 23.08.2024 19:38, Alexander Korotkov wrote:
>>> Hi, Alena!
>>>
>>> On Fri, Aug 23, 2024 at 5:06 PM Alena Rybakina
>>> <a.rybakina@postgrespro.ru> wrote:
>>>> To be fair, I fixed this before [0] by selecting the appropriate group
>>>> of "or" expressions to transform them to "ANY" expression and then
>>>> checking for compatibility with the index column. maybe we should try
>>>> this too? I can think about it.
>>>>
>>>> [0]
>>>> https://www.postgresql.org/message-id/531fc0ab-371e-4235-97e3-dd2d077b6995%40postgrespro.ru
>>> I probably didn't get your message.  Which patch version you think
>>> resolve the problem?  I see [0] doesn't contain any patch.
>> Sorry, I got the links mixed up. We need this link [0].
> Still confusion.
> If that's another [0] from [0] in the cited message then it seems you
> missed new link in your last message.
>
> ------
> Regards,
> Alexander Korotkov
> Supabase
>
>
-- 
Regards,
Alena Rybakina
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company