U
    f,                     @   s4   d dl Z d dlmZ d dlmZ G dd deZdS )    N)BaseDatabaseFeatures)cached_propertyc                       s  e Zd ZdZdZdZdZdZdZdZ	dZ
dZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZedd Zed	d
 ZdZ edd Z!edd Z"edd Z#edd Z$edd Z%e fddZ&edd Z'e(e)*dZ+edd Z,edd Z-edd  Z.e(e)*d!Z/ed"d# Z0e(e)*d$Z1ed%d& Z2ed'd( Z3ed)d* Z4ed+d, Z5ed-d. Z6ed/d0 Z7ed1d2 Z8e(e)*d3Z9e(e)*d3Z:ed4d5 Z;ed6d7 Z<ed8d9 Z=ed:d; Z>ed<d= Z?ed>d? Z@e(e)*d@ZAedAdB ZB  ZCS )CDatabaseFeatures TFz
        CREATE PROCEDURE test_procedure ()
        BEGIN
            DECLARE V_I INTEGER;
            SET V_I = 1;
        END;
    z
        CREATE PROCEDURE test_procedure (P_I INTEGER)
        BEGIN
            DECLARE V_I INTEGER;
            SET V_I = P_I;
        END;
    z
        CREATE TABLE test_table_composite_pk (
            column_1 INTEGER NOT NULL,
            column_2 INTEGER NOT NULL,
            PRIMARY KEY(column_1, column_2)
        )
    c                 C   s   | j jrdS dS d S )N)
      )   
connectionmysql_is_mariadbselfr   r   E/tmp/pip-unpacked-wheel-_jot26k8/django/db/backends/mysql/features.pyminimum_database_version:   s    z)DatabaseFeatures.minimum_database_versionc                 C   sN   d}| j jr| j jdks,| j js0| j jdkr0d}| d| d| ddS )	Nutf8r      )r   r      Zutf8mb3Z_general_ciZ_esperanto_ciZ_swedish_ci)ciZnon_defaultZ
swedish_cir
   r   mysql_version)r   charsetr   r   r   test_collationsA   s    

z DatabaseFeatures.test_collationszUTC_TIMESTAMP(6)c                 C   s   ddhddhdhdhddhd	}| j jrTd
| j j  k r@dk rTn n|ddhi | j jrd| j j  k rtdk rn n|ddhi | js|ddhi d| j jkr|ddhi |S )NzLdb_functions.comparison.test_greatest.GreatestTests.test_coalesce_workaroundzFdb_functions.comparison.test_least.LeastTests.test_coalesce_workaroundz5model_fields.test_textfield.TextFieldTests.test_emojiz4model_fields.test_charfield.TestCharField.test_emojiz;schema.tests.SchemaTests.test_func_index_json_key_transformzDexpressions.tests.FTimeDeltaTests.test_durationfield_multiply_dividezGupdate.tests.AdvancedTests.test_update_ordered_by_inline_m2m_annotationz@update.tests.AdvancedTests.test_update_ordered_by_m2m_annotation)zThis doesn't work on MySQL.z4Running on MySQL requires utf8mb4 encoding (#18392).zHMySQL doesn't support functional indexes on a function that returns JSONzkMySQL supports multiplying and dividing DurationFields by a scalar value but it's not implemented (#25287).zWUPDATE ... ORDER BY syntax on MySQL/MariaDB does not support ordering byrelated fields.)r   r      r         z*https://jira.mariadb.org/browse/MDEV-19598zCschema.tests.SchemaTests.test_alter_not_unique_field_to_primary_key)r   r      )r   r   z*https://jira.mariadb.org/browse/MDEV-22775zBschema.tests.SchemaTests.test_alter_pk_with_self_referential_fieldz%MariaDB and MySQL >= 8.0.18 specific.z4queries.test_explain.ExplainTests.test_mysql_analyzeZONLY_FULL_GROUP_BYzjGROUP BY cannot contain nonaggregated column when ONLY_FULL_GROUP_BY mode is enabled on MySQL, see #34262.zOaggregation.tests.AggregateTestCase.test_group_by_nested_expression_with_params)r
   r   r   updatesupports_explain_analyzesql_mode)r   skipsr   r   r   django_test_skipsU   sf    



	z"DatabaseFeatures.django_test_skipsc                 C   s   | j jd S )zGInternal method used in Django tests. Don't rely on this from your codeZdefault_storage_enginer
   Zmysql_server_datar   r   r   r   _mysql_storage_engine   s    z&DatabaseFeatures._mysql_storage_enginec                 C   s   d| j jkS )zt
        Autoincrement primary key can be set to 0 if it doesn't generate new
        autoincrement values.
        ZNO_AUTO_VALUE_ON_ZERO)r
   r    r   r   r   r   allows_auto_pk_0   s    z!DatabaseFeatures.allows_auto_pk_0c                 C   s   | j jo| j jdkS )N)r   r   r   r   r   r   r   r   update_can_self_select   s    z'DatabaseFeatures.update_can_self_selectc                 C   s
   | j dkS )z-Confirm support for introspected foreign keysMyISAMr$   r   r   r   r   can_introspect_foreign_keys   s    z,DatabaseFeatures.can_introspect_foreign_keysc                    s   t  jdddddS )NZ	TextFieldZIntegerFieldZBigIntegerFieldZ	CharField)ZBinaryFieldZBooleanFieldZDurationFieldZGenericIPAddressField)superintrospected_field_typesr   	__class__r   r   r+      s    z)DatabaseFeatures.introspected_field_typesc                 C   s   | j jo| j jdkS )N)r   r   r   r   r   r   r   r   can_return_columns_from_insert   s    z/DatabaseFeatures.can_return_columns_from_insertr.   c                 C   s   | j jd S )Nhas_zoneinfo_databaser#   r   r   r   r   r/      s    z&DatabaseFeatures.has_zoneinfo_databasec                 C   s   | j jd S )NZsql_auto_is_nullr#   r   r   r   r   is_sql_auto_is_null_enabled   s    z,DatabaseFeatures.is_sql_auto_is_null_enabledc                 C   s   | j jrdS | j jdkS )NT)r   r   r   r   r   r   r   r   supports_over_clause   s    z%DatabaseFeatures.supports_over_clauser1   c                 C   s   | j jrdS | j jdkS NTr   r      r   r   r   r   r   !supports_column_check_constraints   s    z2DatabaseFeatures.supports_column_check_constraintsr5   c                 C   s   | j jrdS | j jdkS r2   r   r   r   r   r    can_introspect_check_constraints   s    z1DatabaseFeatures.can_introspect_check_constraintsc                 C   s    | j jr| j jdkS | j jdkS )Nr   r   r      r   r   r   r   r   !has_select_for_update_skip_locked   s    z2DatabaseFeatures.has_select_for_update_skip_lockedc                 C   s   | j jrdS | j jdkS )NTr7   r   r   r   r   r   has_select_for_update_nowait   s    z-DatabaseFeatures.has_select_for_update_nowaitc                 C   s   | j j o| j jdkS )Nr7   r   r   r   r   r   has_select_for_update_of   s    

z)DatabaseFeatures.has_select_for_update_ofc                 C   s   | j jp| j jdkS )N)r   r      r   r   r   r   r   r     s    z)DatabaseFeatures.supports_explain_analyzec                 C   s,   dddh}| j js(| j jdkr(|d |S )NZJSONZTEXTZTRADITIONALr3   ZTREE)r
   r   r   add)r   formatsr   r   r   supported_explain_formats  s    

z*DatabaseFeatures.supported_explain_formatsc                 C   s
   | j dkS )zI
        All storage engines except MyISAM support transactions.
        r'   r(   r   r   r   r   supports_transactions  s    z&DatabaseFeatures.supports_transactionsr@   c                 C   s   | j jd S )NZlower_case_table_namesr#   r   r   r   r   ignores_table_name_case#  s    z(DatabaseFeatures.ignores_table_name_casec                 C   s
   | j j S )Nr	   r   r   r   r   supports_default_in_lead_lag'  s    z-DatabaseFeatures.supports_default_in_lead_lagc                 C   s   | j jr| jS dS )NT)r
   r   r6   r   r   r   r   can_introspect_json_field,  s    z*DatabaseFeatures.can_introspect_json_fieldc                 C   s.   | j dkrdS | jjr"| jjdkS | jjdkS )NZInnoDBF)r   r   r7   )r$   r
   r   r   r   r   r   r   supports_index_column_ordering2  s
    
z/DatabaseFeatures.supports_index_column_orderingc                 C   s    | j j o| jdko| j jdkS )Nr'   )r   r      )r
   r   r$   r   r   r   r   r   supports_expression_indexes:  s
    

z,DatabaseFeatures.supports_expression_indexesc                 C   s   | j j}|p| j jdkS )N)r   r      r   )r   Z
is_mariadbr   r   r   supports_select_intersectionB  s    z-DatabaseFeatures.supports_select_intersectionrH   c                 C   s   | j jr| j jdkS dS )Nr   Tr   r   r   r   r   can_rename_indexK  s    z!DatabaseFeatures.can_rename_index)D__name__
__module____qualname__Zempty_fetchmany_valueZallows_group_by_selected_pksZrelated_fields_match_typeZallow_sliced_subqueries_with_inZhas_select_for_updateZsupports_forward_referencesZsupports_regex_backreferencingZ!supports_date_lookup_using_stringZsupports_timezonesZ-requires_explicit_null_ordering_when_groupingZatomic_transactionsZcan_clone_databasesZsupports_commentsZsupports_comments_inlineZsupports_temporal_subtractionZ%supports_slicing_ordering_in_compoundZsupports_index_on_text_fieldZsupports_update_conflictsZ(create_test_procedure_without_params_sqlZ(create_test_procedure_with_int_param_sqlZ,create_test_table_with_composite_primary_keyZsupports_partial_indexesZcollate_as_index_expressionZ supports_order_by_nulls_modifierZorder_by_nulls_firstZsupports_logical_xorr   r   r   Ztest_now_utc_templater"   r$   r%   r&   r)   r+   r.   propertyoperator
attrgetterZ can_return_rows_from_bulk_insertr/   r0   r1   Z#supports_frame_range_fixed_distancer5   Z supports_table_check_constraintsr6   r9   r:   r;   r   r?   r@   Zuses_savepointsZcan_release_savepointsrA   rB   rC   rD   rF   rH   Zsupports_select_differencerI   __classcell__r   r   r,   r   r      s   


I



	

















r   )rN   Z django.db.backends.base.featuresr   Zdjango.utils.functionalr   r   r   r   r   r   <module>   s   