sqlalchemy.sql.selectable.Exists

Method	__init__	Undocumented
Method	correlate	Apply correlation to the subquery noted by this :class:`_sql.Exists`.
Method	correlate_except	Apply correlation to the subquery noted by this :class:`_sql.Exists`.
Method	select	Return a SELECT of this :class:`_expression.Exists`.
Method	select_from	Return a new :class:`_expression.Exists` construct, applying the given expression to the :meth:`_expression.Select.select_from` method of the select statement contained.
Method	where	Return a new :func:`_expression.exists` construct with the given expression added to its WHERE clause, joined to the existing clause via AND, if any.
Class Variable	element	Undocumented
Class Variable	inherit_cache	Indicate if this :class:`.HasCacheKey` instance should make use of the cache key generation scheme used by its immediate superclass.
Method	_regroup	Undocumented
Property	_from_objects	Undocumented

Inherited from UnaryExpression:

Method	self_group	Apply a 'grouping' to this :class:`_expression.ClauseElement`.
Class Variable	__visit_name__	Undocumented
Instance Variable	modifier	Undocumented
Instance Variable	operator	Undocumented
Instance Variable	type	Undocumented
Instance Variable	wraps_column_expression	Undocumented
Class Method	_create_asc	Undocumented
Class Method	_create_bitwise_not	Undocumented
Class Method	_create_desc	Undocumented
Class Method	_create_distinct	Undocumented
Class Method	_create_nulls_first	Undocumented
Class Method	_create_nulls_last	Undocumented
Method	_negate	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.
Property	_order_by_label_element	Undocumented

Inherited from ColumnElement (via UnaryExpression):

Method	__getattr__	Undocumented
Method	cast	Produce a type cast, i.e. ``CAST(<expression> AS <type>)``.
Method	comparator	Undocumented
Method	label	Produce a column label, i.e. ``<columnname> AS <name>``.
Method	operate	Operate on an argument.
Method	reverse_operate	Reverse operate on an argument.
Method	shares_lineage	Return True if the given :class:`_expression.ColumnElement` has a common ancestor to this :class:`_expression.ColumnElement`.
Class Variable	foreign_keys	Undocumented
Class Variable	key	The 'key' that in some circumstances refers to this object in a Python namespace.
Class Variable	primary_key	Undocumented
Property	anon_key_label	Undocumented
Property	anon_label	Undocumented
Property	base_columns	Undocumented
Property	expression	Return a column expression.
Property	proxy_set	set of all columns we are proxying
Method	_anon_label	Undocumented
Method	_bind_param	Undocumented
Method	_compare_name_for_result	Return True if the given column element compares to this one when targeting within a result row.
Method	_dedupe_anon_label_idx	label to apply to a column that is anon labeled, but repeated in the SELECT, so that we have to make an "extra anon" label that disambiguates it from the previous appearance.
Method	_dedupe_anon_tq_label_idx	Undocumented
Method	_expression_label	a suggested label to use in the case that the column has no name, which should be used if possible as the explicit 'AS <label>' where this expression would normally have an anon label.
Method	_make_proxy	Create a new :class:`_expression.ColumnElement` representing this :class:`_expression.ColumnElement` as it appears in the select list of a descending selectable.
Method	_proxy_key	Undocumented
Method	_tq_key_label	A label-based version of 'key' that in some circumstances refers to this object in a Python namespace.
Method	_uncached_proxy_list	An 'uncached' version of proxy set.
Class Variable	_allow_label_resolve	A flag that can be flipped to prevent a column from being resolvable by string label name.
Class Variable	_alt_names	Undocumented
Class Variable	_is_clone_of	Undocumented
Class Variable	_is_column_element	Undocumented
Class Variable	_is_implicitly_boolean	Undocumented
Class Variable	_render_label_in_columns_clause	A flag used by select._columns_plus_names that helps to determine we are actually going to render in terms of "SELECT <col> AS <label>". This flag can be returned as False for some Column objects that want to be rendered as simple "SELECT <col>"; typically columns that don't have any parent table and are named the same as what the label would be in any case.
Property	_anon_key_label	Provides a constant 'anonymous key label' for this ColumnElement.
Property	_anon_name_label	Provides a constant 'anonymous label' for this ColumnElement.
Property	_anon_tq_key_label	Undocumented
Property	_anon_tq_label	Undocumented
Property	_expanded_proxy_set	Undocumented
Property	_key_label	legacy; renamed to _tq_key_label
Property	_label	legacy; renamed to _tq_label
Property	_non_anon_label	the 'name' that naturally applies this element when rendered in SQL.
Property	_proxies	Undocumented
Property	_select_iterable	Undocumented
Property	_tq_label	The named label that can be used to target this column in a result set in a "table qualified" context.

Inherited from ColumnArgumentOrKeyRole (via UnaryExpression, ColumnElement):

Class Variable	__slots__	Undocumented
Class Variable	_role_name	Undocumented

Inherited from AllowsLambdaRole (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole):

Class Variable

allows_lambda

Undocumented

Inherited from UsesInspection (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole):

Class Variable	uses_inspection	Undocumented
Class Variable	_post_inspect	Undocumented

Inherited from SQLCoreOperations (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression):

Method	__add__	Implement the ``+`` operator.
Method	__and__	Implement the ``&`` operator.
Method	__contains__	Undocumented
Method	__eq__	Implement the ``==`` operator.
Method	__floordiv__	Implement the ``//`` operator.
Method	__ge__	Implement the ``>=`` operator.
Method	__getitem__	Implement the [] operator.
Method	__gt__	Implement the ``>`` operator.
Method	__invert__	Implement the ``~`` operator.
Method	__le__	Implement the ``<=`` operator.
Method	__lt__	Implement the ``<`` operator.
Method	__mod__	Implement the ``%`` operator.
Method	__mul__	Implement the ``*`` operator.
Method	__ne__	Implement the ``!=`` operator.
Method	__neg__	Implement the ``-`` operator.
Method	__or__	Implement the ``|`` operator.
Method	__radd__	Implement the ``+`` operator in reverse.
Method	__rfloordiv__	Implement the ``//`` operator in reverse.
Method	__rmod__	Implement the ``%`` operator in reverse.
Method	__rmul__	Implement the ``*`` operator in reverse.
Method	__rsub__	Implement the ``-`` operator in reverse.
Method	__rtruediv__	Implement the ``/`` operator in reverse.
Method	__sub__	Implement the ``-`` operator.
Method	__truediv__	Implement the ``/`` operator.
Method	all_	Produce an :func:`_expression.all_` clause against the parent object.
Method	any_	Produce an :func:`_expression.any_` clause against the parent object.
Method	asc	Produce a :func:`_expression.asc` clause against the parent object.
Method	between	Produce a :func:`_expression.between` clause against the parent object, given the lower and upper range.
Method	bool_op	Return a custom boolean operator.
Method	collate	Produce a :func:`_expression.collate` clause against the parent object, given the collation string.
Method	concat	Implement the 'concat' operator.
Method	contains	Implement the 'contains' operator.
Method	desc	Produce a :func:`_expression.desc` clause against the parent object.
Method	distinct	Produce a :func:`_expression.distinct` clause against the parent object.
Method	endswith	Implement the 'endswith' operator.
Method	ilike	Implement the ``ilike`` operator, e.g. case insensitive LIKE.
Method	in_	Implement the ``in`` operator.
Method	is_	Implement the ``IS`` operator.
Method	is_distinct_from	Implement the ``IS DISTINCT FROM`` operator.
Method	is_not	Implement the ``IS NOT`` operator.
Method	is_not_distinct_from	Implement the ``IS NOT DISTINCT FROM`` operator.
Method	isnot	Undocumented
Method	like	Implement the ``like`` operator.
Method	match	Implements a database-specific 'match' operator.
Method	not_ilike	implement the ``NOT ILIKE`` operator.
Method	not_in	implement the ``NOT IN`` operator.
Method	not_like	implement the ``NOT LIKE`` operator.
Method	notilike	Undocumented
Method	notin_	Undocumented
Method	notlike	Undocumented
Method	nulls_first	Produce a :func:`_expression.nulls_first` clause against the parent object.
Method	nulls_last	Produce a :func:`_expression.nulls_last` clause against the parent object.
Method	nullsfirst	Undocumented
Method	nullslast	Undocumented
Method	op	Produce a generic operator function.
Method	regexp_match	Implements a database-specific 'regexp match' operator.
Method	regexp_replace	Implements a database-specific 'regexp replace' operator.
Method	startswith	Implement the ``startswith`` operator.

Inherited from ColumnOperators (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole):

Method	__lshift__	implement the << operator.
Method	__rshift__	implement the >> operator.
Method	bitwise_and	Produce a bitwise AND operation, typically via the ``&`` operator.
Method	bitwise_lshift	Produce a bitwise LSHIFT operation, typically via the ``<<`` operator.
Method	bitwise_not	Produce a bitwise NOT operation, typically via the ``~`` operator.
Method	bitwise_or	Produce a bitwise OR operation, typically via the ``|`` operator.
Method	bitwise_rshift	Produce a bitwise RSHIFT operation, typically via the ``>>`` operator.
Method	bitwise_xor	Produce a bitwise XOR operation, typically via the ``^`` operator, or ``#`` for PostgreSQL.
Method	icontains	Implement the ``icontains`` operator, e.g. case insensitive version of :meth:`.ColumnOperators.contains`.
Method	iendswith	Implement the ``iendswith`` operator, e.g. case insensitive version of :meth:`.ColumnOperators.endswith`.
Method	isnot_distinct_from	Undocumented
Method	istartswith	Implement the ``istartswith`` operator, e.g. case insensitive version of :meth:`.ColumnOperators.startswith`.
Class Variable	timetuple	Hack, allows datetime objects to be compared on the LHS.
Method	_rconcat	Implement an 'rconcat' operator.

Inherited from DQLDMLClauseElement (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole):

Method	compile	Compile this SQL expression.
Method	_compiler	Return a compiler appropriate for this ClauseElement, given a Dialect.

Inherited from ClauseElement (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement):

Method	__bool__	Undocumented
Method	__getstate__	Undocumented
Method	__repr__	Undocumented
Method	compare	Compare this :class:`_expression.ClauseElement` to the given :class:`_expression.ClauseElement`.
Method	get_children	Return immediate child :class:`.visitors.HasTraverseInternals` elements of this :class:`.visitors.HasTraverseInternals`.
Method	params	Return a copy with :func:`_expression.bindparam` elements replaced.
Method	unique_params	Return a copy with :func:`_expression.bindparam` elements replaced.
Class Variable	is_clause_element	Undocumented
Class Variable	is_dml	Undocumented
Class Variable	is_selectable	Undocumented
Class Variable	negation_clause	Undocumented
Property	description	Undocumented
Property	entity_namespace	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	_execute_on_connection	Undocumented
Method	_execute_on_scalar	an additional hook for subclasses to provide a different implementation for connection.scalar() vs. connection.execute().
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 :class:`_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	_gen_static_annotations_cache_key	Undocumented
Class Variable	_is_bind_parameter	Undocumented
Class Variable	_is_clause_list	Undocumented
Class Variable	_is_from_clause	Undocumented
Class Variable	_is_from_container	Undocumented
Class Variable	_is_immutable	Undocumented
Class Variable	_is_keyed_column_element	Undocumented
Class Variable	_is_lambda_element	Undocumented
Class Variable	_is_returns_rows	Undocumented
Class Variable	_is_select_base	Undocumented
Class Variable	_is_select_container	Undocumented
Class Variable	_is_select_statement	Undocumented
Class Variable	_is_singleton_constant	Undocumented
Class Variable	_is_star	Undocumented
Class Variable	_is_table	Undocumented
Class Variable	_is_text_clause	Undocumented
Class Variable	_is_textual	Undocumented
Property	_constructor	return the 'constructor' for this ClauseElement.

Inherited from SupportsWrappingAnnotations (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement):

Method	_annotate	return a copy of this ClauseElement with annotations updated by the given dictionary.
Method	_deannotate	return a copy of this :class:`_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 UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations):

Method	_gen_annotations_cache_key	Undocumented
Property	_annotations_cache_key	Undocumented

Inherited from MemoizedHasCacheKey (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations):

Method

_generate_cache_key

return a cache key.

Inherited from HasCacheKey (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey):

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	_generated_cache_key_traversal	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 UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey, HasCacheKey):

Method

_copy_internals

Reassign internal elements to be clones of themselves.

Inherited from CompilerElement (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey, HasCacheKey, HasCopyInternals, ExternallyTraversible, HasTraverseInternals):

Method	__str__	Undocumented
Class Variable	stringify_dialect	Undocumented
Class Variable	supports_execution	Undocumented

Inherited from Visitable (via UnaryExpression, ColumnElement, ColumnArgumentOrKeyRole, ColumnArgumentRole, StatementOptionRole, WhereHavingRole, OnClauseRole, BinaryElementRole, OrderByRole, ColumnsClauseRole, AllowsLambdaRole, ByOfRole, UsesInspection, ColumnListRole, LimitOffsetRole, DMLColumnRole, DDLConstraintColumnRole, DDLExpressionRole, StructuralRole, SQLColumnExpression, SQLCoreOperations, ExpressionElementRole, TypedColumnsClauseRole, ColumnOperators, Operators, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey, HasCacheKey, HasCopyInternals, ExternallyTraversible, HasTraverseInternals, CompilerElement):

Method	__class_getitem__	Undocumented
Method	__init_subclass__	Undocumented
Class Method	_generate_compiler_dispatch	Undocumented
Method	_compiler_dispatch	Undocumented
Class Variable	_original_compiler_dispatch	Undocumented