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Refs #26167 -- Changed default value of DatabaseFeatures.supports_expression_indexes to True.

This commit is contained in:
Hannes Ljungberg 2021-01-13 19:38:23 +01:00 committed by Mariusz Felisiak
parent b5cef91a91
commit ffe756d624
5 changed files with 7 additions and 4 deletions
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2
django/db/backends/base/features.py
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@ -282,7 +282,7 @@ class BaseDatabaseFeatures:
# Does the backend support covering indexes (CREATE INDEX ... INCLUDE ...)? # Does the backend support covering indexes (CREATE INDEX ... INCLUDE ...)?
supports_covering_indexes = False supports_covering_indexes = False
# Does the backend support indexes on expressions? # Does the backend support indexes on expressions?
supports_expression_indexes = False supports_expression_indexes = True
# Does the backend treat COLLATE as an indexed expression? # Does the backend treat COLLATE as an indexed expression?
collate_as_index_expression = False collate_as_index_expression = False

1
django/db/backends/oracle/features.py
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@ -59,7 +59,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
supports_ignore_conflicts = False supports_ignore_conflicts = False
max_query_params = 2**16 - 1 max_query_params = 2**16 - 1
supports_partial_indexes = False supports_partial_indexes = False
supports_expression_indexes = True
supports_slicing_ordering_in_compound = True supports_slicing_ordering_in_compound = True
allows_multiple_constraints_on_same_fields = False allows_multiple_constraints_on_same_fields = False
supports_boolean_expr_in_select_clause = False supports_boolean_expr_in_select_clause = False

1
django/db/backends/postgresql/features.py
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@ -58,7 +58,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
supports_deferrable_unique_constraints = True supports_deferrable_unique_constraints = True
has_json_operators = True has_json_operators = True
json_key_contains_list_matching_requires_list = True json_key_contains_list_matching_requires_list = True
supports_expression_indexes = True
django_test_skips = { django_test_skips = {
'opclasses are PostgreSQL only.': { 'opclasses are PostgreSQL only.': {

1
django/db/backends/sqlite3/features.py
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@ -38,7 +38,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
supports_pragma_foreign_key_check = Database.sqlite_version_info >= (3, 20, 0) supports_pragma_foreign_key_check = Database.sqlite_version_info >= (3, 20, 0)
can_defer_constraint_checks = supports_pragma_foreign_key_check can_defer_constraint_checks = supports_pragma_foreign_key_check
supports_functions_in_partial_indexes = Database.sqlite_version_info >= (3, 15, 0) supports_functions_in_partial_indexes = Database.sqlite_version_info >= (3, 15, 0)
supports_expression_indexes = True
supports_over_clause = Database.sqlite_version_info >= (3, 25, 0) supports_over_clause = Database.sqlite_version_info >= (3, 25, 0)
supports_frame_range_fixed_distance = Database.sqlite_version_info >= (3, 28, 0) supports_frame_range_fixed_distance = Database.sqlite_version_info >= (3, 28, 0)
supports_aggregate_filter_clause = Database.sqlite_version_info >= (3, 30, 1) supports_aggregate_filter_clause = Database.sqlite_version_info >= (3, 30, 1)

6
docs/releases/3.2.txt
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@ -668,6 +668,12 @@ backends.
backends must implement ``DatabaseClient.settings_to_cmd_args_env()`` or backends must implement ``DatabaseClient.settings_to_cmd_args_env()`` or
override ``DatabaseClient.runshell()``. override ``DatabaseClient.runshell()``.
* Third-party database backends must implement support for functional indexes
(:attr:`.Index.expressions`) or set
``DatabaseFeatures.supports_expression_indexes`` to ``False``. If ``COLLATE``
is not a part of the ``CREATE INDEX`` statement, set
``DatabaseFeatures.collate_as_index_expression`` to ``True``.
:mod:`django.contrib.admin` :mod:`django.contrib.admin`
--------------------------- ---------------------------