sqlalchemy.sql.lambdas.NullLambdaStatement

class documentation

class NullLambdaStatement(roles.AllowsLambdaRole, elements.ClauseElement):

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Provides the .StatementLambdaElement API but does not cache or analyze lambdas.

the lambdas are instead invoked immediately.

The intended use is to isolate issues that may arise when using lambda statements.

Method __add__ Undocumented
Method __getattr__ Undocumented
Method __init__ Undocumented
Method ​_execute​_on​_connection Undocumented
Method add​_criteria Undocumented
Class Variable __visit​_name__ Undocumented
Class Variable ​_is​_lambda​_element Undocumented
Class Variable ​_traverse​_internals Undocumented
Instance Variable ​_propagate​_attrs like annotations, however these propagate outwards liberally as SQL constructs are built, and are set up at construction time.
Instance Variable ​_resolved Undocumented

Inherited from AllowsLambdaRole:

Class Variable allows​_lambda Undocumented

Inherited from ClauseElement:

Method compare Compare this _expression.ClauseElement to the given _expression.ClauseElement.
Method compile Compile this SQL expression.
Method params Return a copy with _expression.bindparam elements replaced.
Method self​_group Apply a 'grouping' to this _expression.ClauseElement.
Method unique​_params Return a copy with _expression.bindparam elements replaced.
Method __bool__ Undocumented
Method __getstate__ Undocumented
Method __invert__ Undocumented
Method __repr__ Undocumented
Method __str__ Undocumented
Method ​_clone Create a shallow copy of this ClauseElement.
Method ​_cloned​_set Return the set consisting all cloned ancestors of this ClauseElement.
Method ​_compile​_w​_cache Undocumented
Method ​_compiler Return a compiler appropriate for this ClauseElement, given a Dialect.
Method ​_negate Undocumented
Method ​_negate​_in​_binary a hook to allow the right side of a binary expression to respond to a negation of the binary expression.
Method ​_replace​_params Undocumented
Method ​_set​_propagate​_attrs Undocumented
Method ​_ungroup Return this _expression.ClauseElement without any groupings.
Method ​_with​_binary​_element​_type in the context of binary expression, convert the type of this object to the one given.
Class Variable ​_cache​_key​_traversal Undocumented
Class Variable ​_from​_objects Undocumented
Class Variable ​_is​_bind​_parameter Undocumented
Class Variable ​_is​_clause​_list Undocumented
Class Variable ​_is​_clone​_of Undocumented
Class Variable ​_is​_from​_clause Undocumented
Class Variable ​_is​_from​_container Undocumented
Class Variable ​_is​_immutable Undocumented
Class Variable ​_is​_returns​_rows Undocumented
Class Variable ​_is​_select​_container Undocumented
Class Variable ​_is​_select​_statement Undocumented
Class Variable ​_is​_singleton​_constant Undocumented
Class Variable ​_is​_text​_clause Undocumented
Class Variable ​_is​_textual Undocumented
Class Variable ​_order​_by​_label​_element Undocumented
Class Variable bind Undocumented
Class Variable description Undocumented
Class Variable is​_clause​_element Undocumented
Class Variable is​_selectable Undocumented
Class Variable stringify​_dialect Undocumented
Class Variable supports​_execution Undocumented
Property ​_constructor return the 'constructor' for this ClauseElement.
Property entity​_namespace Undocumented

Inherited from SQLRole (via ClauseElement):

Class Variable allows​_lambda Undocumented
Class Variable uses​_inspection Undocumented

Inherited from SupportsWrappingAnnotations (via ClauseElement):

Method ​_annotate return a copy of this ClauseElement with annotations updated by the given dictionary.
Method ​_deannotate return a copy of this _expression.ClauseElement with annotations removed.
Method ​_with​_annotations return a copy of this ClauseElement with annotations replaced by the given dictionary.

Inherited from SupportsAnnotations (via ClauseElement, SupportsWrappingAnnotations):

Property ​_annotations​_cache​_key Undocumented

Inherited from MemoizedHasCacheKey (via ClauseElement):

Method ​_generate​_cache​_key return a cache key.

Inherited from HasCacheKey (via ClauseElement, MemoizedHasCacheKey):

Class Variable inherit​_cache Indicate if this .HasCacheKey instance should make use of the cache key generation scheme used by its immediate superclass.
Class Method ​_generate​_cache​_attrs generate cache key dispatcher for a new class.
Class Method ​_generate​_cache​_key​_for​_object Undocumented
Method ​_gen​_cache​_key return an optional cache key.
Class Variable __slots__ Undocumented
Class Variable ​_hierarchy​_supports​_caching private attribute which may be set to False to prevent the inherit_cache warning from being emitted for a hierarchy of subclasses.
Class Variable ​_is​_has​_cache​_key Undocumented

Inherited from HasCopyInternals (via ClauseElement):

Method ​_copy​_internals Reassign internal elements to be clones of themselves.

Inherited from Traversible (via ClauseElement):

Method get​_children Return immediate child .visitors.Traversible elements of this .visitors.Traversible.
Method __class​_getitem__ Undocumented
def __add__(self, other):

Undocumented

def __getattr__(self, key):

Undocumented

def __init__(self, statement):

Undocumented

def _execute_on_connection(self, connection, multiparams, params, execution_options):
overrides sqlalchemy.sql.expression.ClauseElement._execute_on_connection

Undocumented

def add_criteria(self, other, **kw):

Undocumented

__visit_name__: str =
overrides sqlalchemy.sql.expression.ClauseElement.__visit_name__

Undocumented

_is_lambda_element: bool =
overrides sqlalchemy.sql.expression.ClauseElement._is_lambda_element

Undocumented

_traverse_internals =

Undocumented

_propagate_attrs =
overrides sqlalchemy.sql.expression.ClauseElement._propagate_attrs
like annotations, however these propagate outwards liberally as SQL constructs are built, and are set up at construction time.
_resolved =

Undocumented