sqlalchemy.dialects.oracle.INTERVAL

class documentation

class INTERVAL(sqltypes.NativeForEmulated, sqltypes._AbstractInterval): (source)

Known subclasses: sqlalchemy.dialects.oracle.cx_oracle._OracleInterval

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Undocumented

Method __init__ Construct an INTERVAL.
Method as_generic Return an instance of the generic type corresponding to this type using heuristic rule. The method may be overridden if this heuristic rule is not sufficient.
Class Variable __visit_name__ Undocumented
Instance Variable day_precision Undocumented
Instance Variable second_precision Undocumented
Class Method _adapt_from_generic_interval Undocumented
Property _type_affinity Return a rudimental 'affinity' value expressing the general class of type.

Inherited from NativeForEmulated:

Class Method adapt_emulated_to_native Given an impl, adapt this type's class to the impl assuming "native".
Class Method adapt_native_to_emulated Given an impl, adapt this type's class to the impl assuming "emulated".

Inherited from _AbstractInterval (via NativeForEmulated):

Property _expression_adaptations Undocumented

Inherited from HasExpressionLookup (via NativeForEmulated, _AbstractInterval):

Class Comparator Undocumented

Inherited from TypeEngineMixin (via NativeForEmulated, _AbstractInterval, HasExpressionLookup):

Method adapt Undocumented
Method dialect_impl Undocumented
Class Variable __slots__ Undocumented
Property _static_cache_key Undocumented

Inherited from TypeEngine (via NativeForEmulated, _AbstractInterval, HasExpressionLookup, TypeEngineMixin):

Method __repr__ Undocumented
Method __str__ Undocumented
Method bind_expression Given a bind value (i.e. a :class:`.BindParameter` instance), return a SQL expression in its place.
Method bind_processor Return a conversion function for processing bind values.
Method coerce_compared_value Suggest a type for a 'coerced' Python value in an expression.
Method column_expression Given a SELECT column expression, return a wrapping SQL expression.
Method compare_against_backend Compare this type against the given backend type.
Method compare_values Compare two values for equality.
Method compile Produce a string-compiled form of this :class:`.TypeEngine`.
Method copy Undocumented
Method copy_value Undocumented
Method evaluates_none Return a copy of this type which has the :attr:`.should_evaluate_none` flag set to True.
Method get_dbapi_type Return the corresponding type object from the underlying DB-API, if any.
Method literal_processor Return a conversion function for processing literal values that are to be rendered directly without using binds.
Method result_processor Return a conversion function for processing result row values.
Method with_variant Produce a copy of this type object that will utilize the given type when applied to the dialect of the given name.
Class Variable hashable Flag, if False, means values from this type aren't hashable.
Class Variable render_bind_cast Render bind casts for :attr:`.BindTyping.RENDER_CASTS` mode.
Class Variable render_literal_cast render casts when rendering a value as an inline literal, e.g. with :meth:`.TypeEngine.literal_processor`.
Class Variable should_evaluate_none If True, the Python constant ``None`` is considered to be handled explicitly by this type.
Class Variable sort_key_function A sorting function that can be passed as the key to sorted.
Property python_type Return the Python type object expected to be returned by instances of this type, if known.
Static Method _to_instance Undocumented
Method _cached_bind_processor Return a dialect-specific bind processor for this type.
Method _cached_custom_processor return a dialect-specific processing object for custom purposes.
Method _cached_literal_processor Return a dialect-specific literal processor for this type.
Method _cached_result_processor Return a dialect-specific result processor for this type.
Method _compare_type_affinity Undocumented
Method _default_dialect Undocumented
Method _dialect_info Return a dialect-specific registry which caches a dialect-specific implementation, bind processing function, and one or more result processing functions.
Method _gen_dialect_impl Undocumented
Method _resolve_for_literal adjust this type given a literal Python value that will be stored in a bound parameter.
Method _resolve_for_python_type given a Python type (e.g. ``int``, ``str``, etc. ) return an instance of this :class:`.TypeEngine` that's appropriate for this type.
Method _unwrapped_dialect_impl Return the 'unwrapped' dialect impl for this type.
Class Variable _is_array Undocumented
Class Variable _is_table_value Undocumented
Class Variable _is_tuple_type Undocumented
Class Variable _is_type_decorator Undocumented
Class Variable _isnull Undocumented
Class Variable _sqla_type Undocumented
Property _generic_type_affinity Undocumented
Property _has_bind_expression memoized boolean, check if bind_expression is implemented.
Property _has_column_expression memoized boolean, check if column_expression is implemented.

Inherited from Visitable (via NativeForEmulated, _AbstractInterval, HasExpressionLookup, TypeEngineMixin, TypeEngine):

Method __class_getitem__ Undocumented
Method __init_subclass__ Undocumented
Class Method _generate_compiler_dispatch Undocumented
Method _compiler_dispatch Undocumented
Class Variable _original_compiler_dispatch Undocumented
def __init__(self, day_precision=None, second_precision=None): (source)

Construct an INTERVAL. Note that only DAY TO SECOND intervals are currently supported. This is due to a lack of support for YEAR TO MONTH intervals within available DBAPIs. :param day_precision: the day precision value. this is the number of digits to store for the day field. Defaults to "2" :param second_precision: the second precision value. this is the number of digits to store for the fractional seconds field. Defaults to "6".

def as_generic(self, allow_nulltype=False): (source)
overrides sqlalchemy.sql.type_api.TypeEngine.as_generic

Return an instance of the generic type corresponding to this type using heuristic rule. The method may be overridden if this heuristic rule is not sufficient. >>> from sqlalchemy.dialects.mysql import INTEGER >>> INTEGER(display_width=4).as_generic() Integer() >>> from sqlalchemy.dialects.mysql import NVARCHAR >>> NVARCHAR(length=100).as_generic() Unicode(length=100) .. versionadded:: 1.4.0b2 .. seealso:: :ref:`metadata_reflection_dbagnostic_types` - describes the use of :meth:`_types.TypeEngine.as_generic` in conjunction with the :meth:`_sql.DDLEvents.column_reflect` event, which is its intended use.

__visit_name__: str = (source)
overrides sqlalchemy.sql.visitors.Visitable.__visit_name__

Undocumented

day_precision = (source)

Undocumented

second_precision = (source)

Undocumented

@classmethod
def _adapt_from_generic_interval(cls, interval): (source)

Undocumented

@property
_type_affinity = (source)
overrides sqlalchemy.sql.sqltypes._AbstractInterval._type_affinity

Return a rudimental 'affinity' value expressing the general class of type.