Simon Charette 9f3cce172f 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.		2021-07-02 07:25:42 +02:00
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__init__.py	Merged regressiontests and modeltests into the test root.	2013-02-26 14:36:57 +01:00
models.py	Fixed #31377 -- Disabled grouping by aliases on QuerySet.values()/values_list() when they collide with field names.	2020-03-25 09:13:46 +01:00
test_filter_argument.py	Fixed #31568 -- Fixed alias reference when aggregating over multiple subqueries.	2020-05-14 09:31:15 +02:00
tests.py	Refs #26430 -- Re-introduced empty aggregation optimization.	2021-07-02 07:25:42 +02:00