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

Commits on Apr 3, 2025

  1. Estimate the selectivity as quadratic mean of non-null fraction divid… 

    …ed by number of distinct values and set of MCV selectivities. Use quadratic mean because it includes the squared deviation (error) as well and here it would be nice to compute upper limit of estimation to prevent wrong choose of nested loop, for example.
    @feodor
    feodor authored and Commitfest Bot committed Apr 3, 2025
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  2. [CF 5588] v1 - Improvement of var_eq_non_const() 

    This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5588

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

Patch(es): https://www.postgresql.org/message-id/[email protected]
Author(s): Fedor Sigaev
    Commitfest Bot committed Apr 3, 2025
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