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c �( � t j � � S )z-target platform can emit basic DropTable DDL.r r s r �
drop_tablez SuiteRequirements.drop_table# r r
c �( � t j � � S )z*Target database must support foreign keys.r r s r � foreign_keysz SuiteRequirements.foreign_keys) r r
c �( � t j � � S )zQtarget database must support ON UPDATE..CASCADE behavior in
foreign keys.r r s r �on_update_cascadez#SuiteRequirements.on_update_cascade/ � � �
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c �( � t j � � S )zWtarget database must *not* support ON UPDATE..CASCADE behavior in
foreign keys.�r �closedr s r �non_updating_cascadez&SuiteRequirements.non_updating_cascade6 � � � � �"�"�"r
c �( � t j � � S �Nr r s r �deferrable_fksz SuiteRequirements.deferrable_fks< � � �� �"�"�"r
c �2 � � t j � fd�� � S )Nc �4 �� � j j p � j j S r% )r �enabledr& r s �r �<lambda>z?SuiteRequirements.on_update_or_deferrable_fks.<locals>.<lambda>F s �� �D�*�2� +��"�*� r
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c �( � t j � � S )z;Target database must support self-referential foreign keys.r r s r � self_referential_foreign_keysz/SuiteRequirements.self_referential_foreign_keysJ r r
c �( � t j � � S )z=Target database must support the DDL phrases for FOREIGN KEY.r r s r �foreign_key_ddlz!SuiteRequirements.foreign_key_ddlP r r
c �( � t j � � S )z3target database must support names for constraints.r r s r �named_constraintsz#SuiteRequirements.named_constraintsV r r
c �( � t j � � S )z(Target database must support subqueries.r r s r �
subqueriesz SuiteRequirements.subqueries\ r r
c �( � t j � � S )zRtarget database can render OFFSET, or an equivalent, in a
SELECT.
r r s r �offsetzSuiteRequirements.offsetb � � � �� � � r
c �( � t j � � S )zWtarget database can render LIMIT and/or OFFSET using a bound
parameter
r r s r �bound_limit_offsetz$SuiteRequirements.bound_limit_offsetj r9 r
c �( � t j � � S )z�target database can render LIMIT and/or OFFSET with a complete
SQL expression, such as one that uses the addition operator.
parameter
r r s r �sql_expression_limit_offsetz-SuiteRequirements.sql_expression_limit_offsetr � � � �� � � r
c �( � t j � � S )z�Target database must support parenthesized SELECT in UNION
when LIMIT/OFFSET is specifically present.
E.g. (SELECT ...) UNION (SELECT ..)
This is known to fail on SQLite.
r r s r �/parens_in_union_contained_select_w_limit_offsetzASuiteRequirements.parens_in_union_contained_select_w_limit_offset{ � � � �� � � r
c �( � t j � � S )al Target database must support parenthesized SELECT in UNION
when OFFSET/LIMIT is specifically not present.
E.g. (SELECT ... LIMIT ..) UNION (SELECT .. OFFSET ..)
This is known to fail on SQLite. It also fails on Oracle
because without LIMIT/OFFSET, there is currently no step that
creates an additional subquery.
r r s r �0parens_in_union_contained_select_wo_limit_offsetzBSuiteRequirements.parens_in_union_contained_select_wo_limit_offset� s � � �� � � r
c �( � t j � � S )z;Target database must support boolean expressions as columnsr r s r �boolean_col_expressionsz)SuiteRequirements.boolean_col_expressions� r# r
c �( � t j � � S )z5Target database allows boolean columns to store NULL.r r s r �nullable_booleansz#SuiteRequirements.nullable_booleans� r r
c �( � t j � � S )z,Target backends that support nulls ordering.r r s r �
nullsorderingz SuiteRequirements.nullsordering� r# r
c �( � t j � � S )z�target database/driver supports bound parameters as column expressions
without being in the context of a typed column.
r r s r �standalone_bindsz"SuiteRequirements.standalone_binds� � � � � �"�"�"r
c �( � t j � � S )z�target database/driver supports bound parameters with NULL in the
WHERE clause, in situations where it has to be typed.
r r s r �!standalone_null_binds_whereclausez3SuiteRequirements.standalone_null_binds_whereclause� r9 r
c �( � t j � � S )z5Target database must support INTERSECT or equivalent.r r s r � intersectzSuiteRequirements.intersect� � � � � �"�"�"r
c �( � t j � � S )z?Target database must support EXCEPT or equivalent (i.e. MINUS).r r s r �except_zSuiteRequirements.except_� rQ r
c �( � t j � � S )z.Target database must support window functions.r r s r �window_functionsz"SuiteRequirements.window_functions� rQ r
c �( � t j � � S )z Target database supports CTEsr r s r �cteszSuiteRequirements.ctes� r# r
c �( � t j � � S )z�target database supports CTES that ride on top of a normal UPDATE
or DELETE statement which refers to the CTE in a correlated subquery.
r r s r �ctes_with_update_deletez)SuiteRequirements.ctes_with_update_delete� � � � � �"�"�"r
c �( � t j � � S )z}target database supports CTES which consist of INSERT, UPDATE
or DELETE *within* the CTE, e.g. WITH x AS (UPDATE....)r r s r � ctes_on_dmlz SuiteRequirements.ctes_on_dml� � � �
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c �( � t j � � S )z~target platform generates new surrogate integer primary key values
when insert() is executed, excluding the pk column.r r s r �autoincrement_insertz&SuiteRequirements.autoincrement_insert� r r
c �( � t j � � S )a# target platform will allow cursor.fetchone() to proceed after a
COMMIT.
Typically this refers to an INSERT statement with RETURNING which
is invoked within "autocommit". If the row can be returned
after the autocommit, then this rule can be open.
r r s r �fetch_rows_post_commitz(SuiteRequirements.fetch_rows_post_commit� s � � �� � � r
c �( � t j � � S )z�target platform supports SQL expressions in GROUP BY
e.g.
SELECT x + y AS somelabel FROM table GROUP BY x + y
r r s r �group_by_complex_expressionz-SuiteRequirements.group_by_complex_expression� rA r
c �. � t j d� d� � S )Nc �& � | j j j S r% )�db�dialect�supports_sane_rowcount��configs r r+ z1SuiteRequirements.sane_rowcount.<locals>.<lambda>� s � �v�y� 0� G�G� r
z&driver doesn't support 'sane' rowcount�r �skip_ifr s r �
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c �. � t j d� d� � S )zatarget platform supports INSERT with no values, i.e.
INSERT DEFAULT VALUES or equivalent.c �F � | j j j p| j j j S r% )rf rg �supports_empty_insert�supports_default_valuesri s r r+ z1SuiteRequirements.empty_inserts.<locals>.<lambda> s! � �6�9�,�B� 9��y� �8� r
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c �( � t j � � S )z.target platform supports INSERT from a SELECT.r r s r �insert_from_selectz$SuiteRequirements.insert_from_select r r
c �. � t j d� d� � S )z#target platform supports RETURNING.c �$ � | j j j S r% )rf rg �implicit_returningri s r r+ z-SuiteRequirements.returning.<locals>.<lambda>) s � �6�9�,�?� r
z)%(database)s %(does_support)s 'returning'r, r s r � returningzSuiteRequirements.returning$ s" � � �!� ?� ?� 7�
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c �( � t j � � S )zZTarget platform supports the syntax
"(x, y) IN ((x1, y1), (x2, y2), ...)"
r r s r �tuple_inzSuiteRequirements.tuple_in- rL r
c � � | j S )z%Target platform tuple IN w/ empty set)r� r s r �tuple_in_w_emptyz"SuiteRequirements.tuple_in_w_empty5 s � � �}� r
c �( � t j � � S )zwtarget platform supports a SELECT statement that has
the same name repeated more than once in the columns list.r r s r �%duplicate_names_in_cursor_descriptionz7SuiteRequirements.duplicate_names_in_cursor_description: r r
c �. � t j d� d� � S )z[Target database must have 'denormalized', i.e.
UPPERCASE as case insensitive names.c �& � | j j j S r% )rf rg �requires_name_normalizeri s r r+ z6SuiteRequirements.denormalized_names.<locals>.<lambda>G s � �v�y� 0� H�H� r
z,Backend does not require denormalized names.rk r s r �denormalized_namesz$SuiteRequirements.denormalized_namesA s" � �
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c �. � t j d� d� � S )zTtarget database must support multiple VALUES clauses in an
INSERT statement.c �& � | j j j S r% )rf rg �supports_multivalues_insertri s r r+ z7SuiteRequirements.multivalues_inserts.<locals>.<lambda>Q s � �v�y� 0� L�L� r
z*Backend does not support multirow inserts.rk r s r �multivalues_insertsz%SuiteRequirements.multivalues_insertsK s" � �
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c �( � t j � � S )zvtarget dialect implements the executioncontext.get_lastrowid()
method without reliance on RETURNING.
r r s r �implements_get_lastrowidz*SuiteRequirements.implements_get_lastrowidU r9 r
c �( � t j � � S )a< target dialect retrieves cursor.lastrowid, or fetches
from a database-side function after an insert() construct executes,
within the get_lastrowid() method.
Only dialects that "pre-execute", or need RETURNING to get last
inserted id, would return closed/fail/skip for this.
r r s r �emulated_lastrowidz$SuiteRequirements.emulated_lastrowid] � � � � �"�"�"r
c �( � t j � � S )z]target platform includes a 'lastrowid' accessor on the DBAPI
cursor object.
r r s r �dbapi_lastrowidz!SuiteRequirements.dbapi_lastrowidi rL r
c �( � t j � � S )z#Target database must support VIEWs.r r s r �viewszSuiteRequirements.viewsq r# r
c �( � t j � � S )zXTarget database must support external schemas, and have one
named 'test_schema'.r r s r �schemaszSuiteRequirements.schemasw r] r
c �( � t j � � S )zJtarget system must support reflection of inter-schema foreign
keysr r s r �cross_schema_fk_reflectionz,SuiteRequirements.cross_schema_fk_reflection~ r# r
c �( � t j � � S )a Target supports refleciton of FOREIGN KEY constraints and
will return the name of the constraint that was used in the
"CONSTRANT <name> FOREIGN KEY" DDL.
MySQL prior to version 8 and MariaDB prior to version 10.5
don't support this.
r r s r �&foreign_key_constraint_name_reflectionz8SuiteRequirements.foreign_key_constraint_name_reflection� r� r
c �( � t j � � S )z�target system has a strong concept of 'default' schema that can
be referred to implicitly.
basically, PostgreSQL.
r r s r �implicit_default_schemaz)SuiteRequirements.implicit_default_schema� � � � � �"�"�"r
c �0 � t j d� gd� � S )z0Target dialect must support server side cursors.c �$ � | j j j S r% )rf rg � supports_server_side_cursorsri s r r+ z7SuiteRequirements.server_side_cursors.<locals>.<lambda>� s � �F�I� -� J� r
z no server side cursors supportr, r s r �server_side_cursorsz%SuiteRequirements.server_side_cursors� s% � � �!�
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c �0 � t j d� gd� � S )z'Target database must support SEQUENCEs.c �$ � | j j j S r% )rf rg �supports_sequencesri s r r+ z-SuiteRequirements.sequences.<locals>.<lambda>� s � �F�I� -� @� r
zno sequence supportr, r s r � sequenceszSuiteRequirements.sequences� s% � � �!�
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c �0 � t j d� gd� � S )zgTarget database supports sequences, but also optionally
as a means of generating new PK values.c �F � | j j j o| j j j S r% )rf rg r� �sequences_optionalri s r r+ z6SuiteRequirements.sequences_optional.<locals>.<lambda>� s! � �v�y� 0� C� 9��I�%�8� r
z.no sequence support, or sequences not optionalr, r s r r� z$SuiteRequirements.sequences_optional� s- � �
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c �. � t j d� g� � S )a target database / driver supports cursor.lastrowid as a means
of retrieving the last inserted primary key value.
note that if the target DB supports sequences also, this is still
assumed to work. This is a new use case brought on by MariaDB 10.3.
c �$ � | j j j S r% )rf rg �postfetch_lastrowidri s r r+ z6SuiteRequirements.supports_lastrowid.<locals>.<lambda>� s � �F�I� -� A� r
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c �4 � t j | j � � S )z"the opposite of supports_lastrowid)r � NotPredicater� r s r �no_lastrowid_supportz&SuiteRequirements.no_lastrowid_support� s � � �&�t�'>�?�?�?r
c �( � t j � � S r% r r s r �reflects_pk_namesz#SuiteRequirements.reflects_pk_names� r' r
c �( � t j � � S r% r r s r �table_reflectionz"SuiteRequirements.table_reflection� � � ��� � � r
c �( � t j � � S r% r r s r �comment_reflectionz$SuiteRequirements.comment_reflection� r' r
c � � | j S )z�target database must support retrieval of the columns in a view,
similarly to how a table is inspected.
This does not include the full CREATE VIEW definition.
�r� r s r �view_column_reflectionz(SuiteRequirements.view_column_reflection� s � � �z�r
c � � | j S )zStarget database must support inspection of the full CREATE VIEW
definition.r� r s r �view_reflectionz!SuiteRequirements.view_reflection� s � � �z�r
c � � | j S r% )r� r s r �schema_reflectionz#SuiteRequirements.schema_reflection� s
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c �( � t j � � S r% r r s r �!primary_key_constraint_reflectionz3SuiteRequirements.primary_key_constraint_reflection� r� r
c �( � t j � � S r% r r s r �!foreign_key_constraint_reflectionz3SuiteRequirements.foreign_key_constraint_reflection� r� r
c �( � t j � � S r% r r s r �1foreign_key_constraint_option_reflection_ondeletezCSuiteRequirements.foreign_key_constraint_option_reflection_ondelete� r' r
c �( � t j � � S r% r r s r �1foreign_key_constraint_option_reflection_onupdatezCSuiteRequirements.foreign_key_constraint_option_reflection_onupdate� r' r
c �( � t j � � S r% r r s r �temp_table_reflectionz'SuiteRequirements.temp_table_reflection� r� r
c �( � t j � � S )z8target dialect supports listing of temporary table namesr r s r �temp_table_namesz"SuiteRequirements.temp_table_names� rQ r
c �( � t j � � S )z)target database supports temporary tablesr r s r �temporary_tablesz"SuiteRequirements.temporary_tables � � � �� � � r
c �( � t j � � S )z(target database supports temporary viewsr r s r �temporary_viewsz!SuiteRequirements.temporary_views rQ r
c �( � t j � � S r% r r s r �index_reflectionz"SuiteRequirements.index_reflection r� r
c �( � t j � � S )z?target database supports CREATE INDEX with per-column ASC/DESC.r r s r �indexes_with_ascdescz&SuiteRequirements.indexes_with_ascdesc r� r
c �( � t j � � S )z>target database supports CREATE INDEX against SQL expressions.r r s r �indexes_with_expressionsz*SuiteRequirements.indexes_with_expressions rQ r
c �( � t j � � S )z8target dialect supports reflection of unique constraintsr r s r � unique_constraint_reflectionz.SuiteRequirements.unique_constraint_reflection r� r
c �( � t j � � S )z7target dialect supports reflection of check constraintsr r s r �check_constraint_reflectionz-SuiteRequirements.check_constraint_reflection! rQ r
c �( � t j � � S )z�target dialect raises IntegrityError when reporting an INSERT
with a primary key violation. (hint: it should)
r r s r �$duplicate_key_raises_integrity_errorz6SuiteRequirements.duplicate_key_raises_integrity_error& r9 r
c �( � t j � � S )z3Target database must support VARCHAR with no lengthr r s r �unbounded_varcharz#SuiteRequirements.unbounded_varchar. r r
c �( � t j � � S )z�Target database/dialect must support Python unicode objects with
non-ASCII characters represented, delivered as bound parameters
as well as in result rows.
r r s r � unicode_dataz SuiteRequirements.unicode_data4 r> r
c �( � t j � � S )zRTarget driver must support some degree of non-ascii symbol
names.
r r s r � unicode_ddlz SuiteRequirements.unicode_ddl= r] r
c �( � t j � � S )z?Target driver can create tables with a name like 'some " table'r r s r �symbol_names_w_double_quotez-SuiteRequirements.symbol_names_w_double_quoteD r� r
c �( � t j � � S )z�target dialect supports rendering of a date, time, or datetime as a
literal string, e.g. via the TypeEngine.literal_processor() method.
r r s r �datetime_literalsz#SuiteRequirements.datetime_literalsI rZ r
c �( � t j � � S )zUtarget dialect supports representation of Python
datetime.datetime() objects.r r s r �datetimezSuiteRequirements.datetimeR r r
c �( � t j � � S )zftarget dialect supports representation of Python
datetime.datetime() with microsecond objects.r r s r �datetime_microsecondsz'SuiteRequirements.datetime_microsecondsY r r
c �( � t j � � S )z�target dialect supports representation of Python
datetime.datetime() with microsecond objects but only
if TIMESTAMP is used.r r s r �timestamp_microsecondsz(SuiteRequirements.timestamp_microseconds` r] r
c �( � t j � � S �zutarget dialect supports representation of Python
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c �( � t j � � S )zQtarget dialect supports representation of Python
datetime.date() objects.r r s r �datezSuiteRequirements.daten r r
c �( � t j � � S )zPtarget dialect accepts a datetime object as the target
of a date column.r r s r �date_coerces_from_datetimez,SuiteRequirements.date_coerces_from_datetimeu r r
c �( � t j � � S r� r r s r �
date_historicz SuiteRequirements.date_historic| r] r
c �( � t j � � S )zQtarget dialect supports representation of Python
datetime.time() objects.r r s r �timezSuiteRequirements.time� r r
c �( � t j � � S )zbtarget dialect supports representation of Python
datetime.time() with microsecond objects.r r s r �time_microsecondsz#SuiteRequirements.time_microseconds� r r
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r r s r �binary_comparisonsz$SuiteRequirements.binary_comparisons� r9 r
c �( � t j � � S )a! target backend supports simple binary literals, e.g. an
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Basically fails on Oracle.
r r s r �binary_literalsz!SuiteRequirements.binary_literals� � � � �� � � r
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not open, then this method has no return value.
E.g.::
>>> testing.requirements.get_isolation_levels()
{
"default": "READ_COMMITED",
"supported": [
"SERIALIZABLE", "READ UNCOMMITTED",
"READ COMMITTED", "REPEATABLE READ",
"AUTOCOMMIT"
]
}
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r r s r �*precision_numerics_many_significant_digitsz<SuiteRequirements.precision_numerics_many_significant_digits� rL r
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See :ticket:`4036`
r r s r �implicit_decimal_bindsz(SuiteRequirements.implicit_decimal_binds� s � �& �� � � r
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