class level docstring for Subquery

Remove inherited member doc from most selectables, it's too verbose

Change-Id: I1b6635fe73342705846c0fab635b46557e560734

diff --git a/doc/build/core/selectable.rst b/doc/build/core/selectable.rst
index 14099b6c7682a0cd4bedd0e03aae997c769c2240..2ac2437570c824ad4517ae49de4dd213add014b4 100644 (file)
--- a/doc/build/core/selectable.rst
+++ b/doc/build/core/selectable.rst
@@ -39,19 +39,15 @@ elements are themselves :class:`.ColumnElement` subclasses).
 
 .. autoclass:: Alias
    :members:
-   :inherited-members:
 
 .. autoclass:: AliasedReturnsRows
    :members:
-   :inherited-members:
 
 .. autoclass:: CompoundSelect
    :members:
-   :inherited-members:
 
 .. autoclass:: CTE
    :members:
-   :inherited-members:
 
 .. autoclass:: Executable
    :members:
@@ -61,7 +57,6 @@ elements are themselves :class:`.ColumnElement` subclasses).
 
 .. autoclass:: GenerativeSelect
    :members:
-   :inherited-members:
 
 .. autoclass:: HasCTE
    :members:
@@ -74,11 +69,9 @@ elements are themselves :class:`.ColumnElement` subclasses).
 
 .. autoclass:: Join
    :members:
-   :inherited-members:
 
 .. autoclass:: Lateral
    :members:
-   :inherited-members:
 
 .. autoclass:: ScalarSelect
    :members:
@@ -92,11 +85,9 @@ elements are themselves :class:`.ColumnElement` subclasses).
 
 .. autoclass:: SelectBase
    :members:
-   :inherited-members:
 
 .. autoclass:: Subquery
    :members:
-   :inherited-members:
 
 .. autoclass:: TableClause
    :members:
@@ -104,8 +95,6 @@ elements are themselves :class:`.ColumnElement` subclasses).
 
 .. autoclass:: TableSample
    :members:
-   :inherited-members:
 
-.. autoclass:: TextAsFrom
+.. autoclass:: TextualSelect
    :members:
-   :inherited-members:

diff --git a/lib/sqlalchemy/sql/selectable.py b/lib/sqlalchemy/sql/selectable.py
index 2263073c49f9bb47c8aa959199f526298b1a02bb..c93de8d7369adf1c0cbf18d45fd64442a26fbd1f 100644 (file)
--- a/lib/sqlalchemy/sql/selectable.py
+++ b/lib/sqlalchemy/sql/selectable.py
@@ -1280,6 +1280,10 @@ class Alias(AliasedReturnsRows):
     level function as well as the :meth:`.FromClause.alias` method available
     on all :class:`.FromClause` subclasses.
 
+    .. seealso::
+
+        :meth:`.FromClause.alias`
+
     """
 
     __visit_name__ = "alias"
@@ -1710,6 +1714,28 @@ class HasCTE(roles.HasCTERole):
 
 
 class Subquery(AliasedReturnsRows):
+    """Represent a subquery of a SELECT.
+
+    A :class:`.Subquery` is created by invoking the
+    :meth:`.SelectBase.subquery` method, or for convenience the
+    :class:`.SelectBase.alias` method, on any :class:`.SelectBase` subclass
+    which includes :class:`.Select`, :class:`.CompoundSelect`, and
+    :class:`.TextualSelect`.  As rendered in a FROM clause, it represents the
+    body of the SELECT statement inside of parenthesis, followed by the usual
+    "AS <somename>" that defines all "alias" objects.
+
+    The :class:`.Subquery` object is very similar to the :class:`.Alias`
+    object and can be used in an equivalent way.    The difference between
+    :class:`.Alias` and :class:`.Subquery` is that :class:`.Alias` always
+    contains a :class:`.FromClause` object whereas :class:`.Subquery`
+    always contains a :class:`.SelectBase` object.
+
+    .. versionadded:: 1.4 The :class:`.Subquery` class was added which now
+       serves the purpose of providing an aliased version of a SELECT
+       statement.
+
+    """
+
     __visit_name__ = "subquery"
 
     _is_subquery = True