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base repository: postgresql-cfbot/postgresql
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  • 2 commits
  • 2 files changed
  • 2 contributors

Commits on Feb 17, 2025

  1. Specialize intarray sorting 

    There is at least one report in the field of storing millions of
integers in arrays, so it seems like a good time to specialize
intarray's qsort function. In doing so, streamline the comparators:
Previously there were three, two for each direction for sorting
and one passed to qunique_arg. To preserve the early exit in the
case of descending input, pass the direction as an argument to
the comparator. This requires giving up duplicate detection, which
previously allowed skipping the unique-ifying step. Testing showed
no regressions in always calling qunique().

In passing, get rid of nearby checks that the input has at least
two elements, since preserving them would make some macros less
readable. These are not necessary for correctness, and seem like
premature optimizations.

Author: Andrey M. Borodin <x4mmm@yandex-team.ru>
Discussion: https://postgr.es/m/098A3E67-E4A6-4086-9C66-B1EAEB1DFE1C@yandex-team.ru
    Andrey M. Borodin authored and Commitfest Bot committed Feb 17, 2025
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  2. [CF 52/5036] v11 - Sort functions with specialized comparators 

    This commit was automatically generated by a robot at cfbot.cputube.org.
It is based on patches submitted to the PostgreSQL mailing lists and
registered in the PostgreSQL Commitfest application.

This branch will be overwritten each time a new patch version is posted to
the email thread, and also periodically to check for bitrot caused by changes
on the master branch.

Commitfest entry: https://commitfest.postgresql.org/52/5036
Patch(es): https://www.postgresql.org/message-id/CANWCAZa_0uV5mshEDHxfojW1OZYCFe_f9ouJ+2oT9O_GEmgZTg@mail.gmail.com
Author(s):
    Commitfest Bot committed Feb 17, 2025
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