class Selectable(ReturnsRows):
Known subclasses: sqlalchemy.sql.expression.FromClause
, sqlalchemy.sql.selectable.SelectBase
Method | corresponding_column |
No summary |
Method | lateral |
Return a LATERAL alias of this _expression.Selectable . |
Method | replace_selectable |
Replace all occurrences of _expression.FromClause 'old' with the given _expression.Alias object, returning a copy of this _expression.FromClause . |
Method | _refresh_for_new_column |
Undocumented |
Class Variable | __visit_name__ |
Undocumented |
Class Variable | is_selectable |
Undocumented |
Inherited from ReturnsRows
:
Class Variable | _is_from_clause |
Undocumented |
Class Variable | _is_lateral |
Undocumented |
Class Variable | _is_returns_rows |
Undocumented |
Class Variable | _is_select_statement |
Undocumented |
Property | _all_selected_columns |
A sequence of column expression objects that represents the "selected" columns of this _expression.ReturnsRows . |
Property | exported_columns |
A _expression.ColumnCollection that represents the "exported" columns of this _expression.ReturnsRows . |
Property | selectable |
Undocumented |
Inherited from ReturnsRowsRole
(via ReturnsRows
):
Class Variable | _role_name |
Undocumented |
Inherited from SQLRole
(via ReturnsRows
, ReturnsRowsRole
):
Class Variable | allows_lambda |
Undocumented |
Class Variable | uses_inspection |
Undocumented |
Inherited from ClauseElement
(via ReturnsRows
):
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 | _execute_on_connection |
Undocumented |
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_container |
Undocumented |
Class Variable | _is_immutable |
Undocumented |
Class Variable | _is_lambda_element |
Undocumented |
Class Variable | _is_select_container |
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 | stringify_dialect |
Undocumented |
Class Variable | supports_execution |
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 | _constructor |
return the 'constructor' for this ClauseElement. |
Property | entity_namespace |
Undocumented |
Inherited from SQLRole
(via ReturnsRows
, ClauseElement
):
Class Variable | allows_lambda |
Undocumented |
Class Variable | uses_inspection |
Undocumented |
Inherited from SupportsWrappingAnnotations
(via ReturnsRows
, 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 ReturnsRows
, ClauseElement
, SupportsWrappingAnnotations
):
Property | _annotations_cache_key |
Undocumented |
Inherited from MemoizedHasCacheKey
(via ReturnsRows
, ClauseElement
):
Method | _generate_cache_key |
return a cache key. |
Inherited from HasCacheKey
(via ReturnsRows
, 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 ReturnsRows
, ClauseElement
):
Method | _copy_internals |
Reassign internal elements to be clones of themselves. |
Inherited from Traversible
(via ReturnsRows
, ClauseElement
):
Method | get_children |
Return immediate child .visitors.Traversible elements of this .visitors.Traversible . |
Method | __class_getitem__ |
Undocumented |
Given a _expression.ColumnElement
, return the exported
_expression.ColumnElement
object from the
_expression.Selectable.exported_columns
collection of this _expression.Selectable
which corresponds to that
original _expression.ColumnElement
via a common ancestor
column.
See Also
_expression.Selectable.exported_columns
- the
_expression.ColumnCollection
that is used for the operation.
_expression.ColumnCollection.corresponding_column
- implementation
method.
Parameters | |
column | the target _expression.ColumnElement
to be matched. |
require_embedded | only return corresponding columns for
the given _expression.ColumnElement , if the given
_expression.ColumnElement
is actually present within a sub-element
of this _expression.Selectable .
Normally the column will match if
it merely shares a common ancestor with one of the exported
columns of this _expression.Selectable . |
sqlalchemy.sql.expression.TableValuedAlias
, sqlalchemy.sql.expression.Values
, sqlalchemy.sql.selectable.SelectBase
Return a LATERAL alias of this _expression.Selectable
.
The return value is the _expression.Lateral
construct also
provided by the top-level _expression.lateral
function.
See Also
:ref:`lateral_selects` - overview of usage.
_expression.FromClause
'old' with the given _expression.Alias
object, returning a copy of this _expression.FromClause
.str
=