Re: POC, WIP: OR-clause support for indexes
Andrei Lepikhov <a.lepikhov@postgrespro.ru>
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Make group_similar_or_args() reorder clause list as little as possible
- 775a06d44c04 18.0 landed
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Allow usage of match_orclause_to_indexcol() for joins
- 627d63419e22 18.0 landed
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Skip not SOAP-supported indexes while transforming an OR clause into SAOP
- 5bba0546eecb 18.0 landed
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Remove the wrong assertion from match_orclause_to_indexcol()
- d4d11940df94 18.0 landed
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Teach bitmap path generation about transforming OR-clauses to SAOP's
- ae4569161a27 18.0 landed
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Transform OR-clauses to SAOP's during index matching
- d4378c0005e6 18.0 landed
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Fix the value of or_to_any_transform_limit in postgresql.conf.sample
- 2af75e117478 17.0 landed
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Transform OR clauses to ANY expression
- 72bd38cc99a1 17.0 landed
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MergeAttributes code deduplication
- 64444ce071f6 17.0 cited
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SEARCH and CYCLE clauses
- 3696a600e229 14.0 cited
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Improve estimation of OR clauses using extended statistics.
- 25a9e54d2db3 14.0 cited
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Teach btree to handle ScalarArrayOpExpr quals natively.
- 9e8da0f75731 9.2.0 cited
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Revise collation derivation method and expression-tree representation.
- b310b6e31ce5 9.1.0 cited
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Instead of trying to force WHERE clauses into CNF or DNF normal form,
- 9888192fb773 8.0.0 cited
Attachments
- diff-3.diff (text/plain) patch
On 7/7/2023 15:20, Alena Rybakina wrote:
>
> because we will provide similar manipulation in this:
>
> foreach(l, gentry->consts)
> {
> Node *rexpr = (Node *) lfirst(l);
>
> rexpr = coerce_to_common_type(pstate, rexpr,
> scalar_type,
> "IN");
> aexprs = lappend(aexprs, rexpr);
> }
I'm not sure that it should be replaced.
In attachment - a bit more corrections to the patch.
The most important change - or_list contains already transformed
expression subtree. So, I think we don't need to free it at all.
--
regards,
Andrey Lepikhov
Postgres Professional