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Teach bitmap path generation about transforming OR-clauses to SAOP's

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When optimizer generates bitmap paths, it considers breaking OR-clause
arguments one-by-one.  But now, a group of similar OR-clauses can be
transformed into SAOP during index matching.  So, bitmap paths should
keep up.

This commit teaches bitmap paths generation machinery to group similar
OR-clauses into dedicated RestrictInfos.  Those RestrictInfos are considered
both to match index as a whole (as SAOP), or to match as a set of individual
OR-clause argument one-by-one (the old way).

Therefore, bitmap path generation will takes advantage of OR-clauses to SAOP's
transformation.  The old way of handling them is also considered.  So, there
shouldn't be planning regression.

Discussion: https://postgr.es/m/CAPpHfdu5iQOjF93vGbjidsQkhHvY2NSm29duENYH_cbhC6x%2BMg%40mail.gmail.com
Author: Alexander Korotkov, Andrey Lepikhov
Reviewed-by: Alena Rybakina, Andrei Lepikhov, Jian he, Robert Haas
Reviewed-by: Peter Geoghegan
This commit is contained in:
Alexander Korotkov
2024-11-24 01:41:45 +02:00
parent d4378c0005
commit ae4569161a
7 changed files with 664 additions and 104 deletions
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src/tools/pgindent/typedefs.list
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@@ -1767,6 +1767,7 @@ OprCacheKey
OprInfo
OprProofCacheEntry
OprProofCacheKey
OrArgIndexMatch
OuterJoinClauseInfo
OutputPluginCallbacks
OutputPluginOptions