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| author | Simon Charette <charette.s@gmail.com> | 2021-05-21 22:32:16 -0400 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2021-07-02 07:25:42 +0200 |
| commit | 9f3cce172f6913c5ac74272fa5fc07f847b4e112 (patch) | |
| tree | 027dec2a7a1bef8c02c2e58ffded8718401b28d1 /tests/modeladmin | |
| parent | f3112fde981052801e0c2121027424496c03efdf (diff) | |
Refs #26430 -- Re-introduced empty aggregation optimization.
The introduction of the Expression.empty_aggregate_value interface
allows the compilation stage to enable the EmptyResultSet optimization
if all the aggregates expressions implement it.
This also removes unnecessary RegrCount/Count.convert_value() methods.
Disabling the empty result set aggregation optimization when it wasn't
appropriate prevented None returned for a Count aggregation value.
Thanks Nick Pope for the review.
Diffstat (limited to 'tests/modeladmin')
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