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15 Commits

Author SHA1 Message Date
David Wobrock ad36a198a1 Fixed #33141 -- Renamed Expression.empty_aggregate_value to empty_result_set_value. 2021-09-29 12:58:01 +02:00
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
Mariusz Felisiak e07609a0d1 Refs #32858, Refs #32392 -- Restored using :: shortcut syntax in Cast() on PostgreSQL. 
This partly reverts commit fdfbc66331
unnecessary since b69b0c3fe8.
 2021-06-22 06:28:42 +02:00
Tilman Koschnick fdfbc66331 Fixed #32392 -- Fixed ExclusionConstraint crash with Cast() in expressions. 2021-01-29 11:05:00 +01:00
Artur Beltsov 48b4bae983 Fixed #32179 -- Added JSONObject database function. 2020-12-02 09:30:50 +01:00
Tom Carrick 63300f7e68 Fixed #21181 -- Added Collate database function. 
Thanks Simon Charette for reviews.
 2020-08-11 22:21:08 +02:00
sage 6789ded0a6 Fixed #12990, Refs #27694 -- Added JSONField model field. 
Thanks to Adam Johnson, Carlton Gibson, Mariusz Felisiak, and Raphael
Michel for mentoring this Google Summer of Code 2019 project and
everyone else who helped with the patch.

Special thanks to Mads Jensen, Nick Pope, and Simon Charette for
extensive reviews.

Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
 2020-05-08 07:23:31 +02:00
Nick Pope 0d7ba0ff8b Simplified overriding source expressions in some database functions. 2019-01-14 13:02:58 -05:00
Mads Jensen 4b9d72210f Refs #28643 -- Added NullIf database function. 
Thanks Nick Pope, Mariusz Felisiak, and Tim Graham for reviews.
 2019-01-10 12:10:12 -05:00
Nick Pope 99b3ab2781 Simplified some imports for database functions. 
Used more specific modules to reduce the risk of circular imports.
 2019-01-08 19:21:31 -05:00
Claude Paroz fc3a463048 Fixed #29767 -- Made date-related casts work on SQLite 
Thanks Rémy Hubscher for the report and Tim Graham and Simon Charette for the reviews.
 2018-10-01 13:27:30 +02:00
priyanshsaxena 83b04d4f88 Fixed #29048 -- Added **extra_context to database function as_vendor() methods. 2018-08-23 11:52:09 -04:00
hayashi 27557a7a99 Fixed #28857 -- Fixed invalid SQL when using Cast with complex expressions on PostgreSQL. 2018-01-17 09:28:03 -05:00
Sergey Fedoseev 44908d4d93 Fixed #28967 -- Prevented Cast to FloatField from rounding to integer on MySQL. 2017-12-27 19:16:37 -05:00
Mariusz Felisiak 4f27e475b3 Refs #28643 -- Reorganized database functions. 
Thanks Tim Graham for the review.
 2017-10-13 21:23:00 +02:00