123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263 |
- from django.db.backends.base.features import BaseDatabaseFeatures
- from django.db.utils import InterfaceError
- from django.utils.functional import cached_property
-
-
- class DatabaseFeatures(BaseDatabaseFeatures):
- allows_group_by_selected_pks = True
- can_return_id_from_insert = True
- can_return_ids_from_bulk_insert = True
- has_real_datatype = True
- has_native_uuid_field = True
- has_native_duration_field = True
- can_defer_constraint_checks = True
- has_select_for_update = True
- has_select_for_update_nowait = True
- has_select_for_update_of = True
- uses_savepoints = True
- can_release_savepoints = True
- supports_tablespaces = True
- supports_transactions = True
- can_introspect_autofield = True
- can_introspect_ip_address_field = True
- can_introspect_small_integer_field = True
- can_distinct_on_fields = True
- can_rollback_ddl = True
- supports_combined_alters = True
- nulls_order_largest = True
- closed_cursor_error_class = InterfaceError
- has_case_insensitive_like = False
- requires_sqlparse_for_splitting = False
- greatest_least_ignores_nulls = True
- can_clone_databases = True
- supports_temporal_subtraction = True
- supports_slicing_ordering_in_compound = True
- create_test_procedure_without_params_sql = """
- CREATE FUNCTION test_procedure () RETURNS void AS $$
- DECLARE
- V_I INTEGER;
- BEGIN
- V_I := 1;
- END;
- $$ LANGUAGE plpgsql;"""
- create_test_procedure_with_int_param_sql = """
- CREATE FUNCTION test_procedure (P_I INTEGER) RETURNS void AS $$
- DECLARE
- V_I INTEGER;
- BEGIN
- V_I := P_I;
- END;
- $$ LANGUAGE plpgsql;"""
- supports_over_clause = True
- supports_aggregate_filter_clause = True
- supported_explain_formats = {'JSON', 'TEXT', 'XML', 'YAML'}
- validates_explain_options = False # A query will error on invalid options.
-
- @cached_property
- def is_postgresql_9_5(self):
- return self.connection.pg_version >= 90500
-
- has_select_for_update_skip_locked = is_postgresql_9_5
- has_brin_index_support = is_postgresql_9_5
- has_jsonb_agg = is_postgresql_9_5
- has_gin_pending_list_limit = is_postgresql_9_5
|