tutorial 2.0 WIPreview/mike_bayer/tutorial20

Add SelectBase.exists() method as it seems strange this is
not available already.  The Exists construct itself does
not provide full SELECT-building capabilities so it makes
sense this should be used more like a scalar_subquery.

Make sure stream_results is getting set up when yield_per
is used, for 2.0 style statements as well.  this was
hardcoded inside of Query.yield_per() and is now moved
to take place within QueryContext.

Change-Id: Icafcd4fd9b708772343d56edf40995c9e8f835d6

1 files changed, 44 insertions, 0 deletions

diff --git a/doc/build/tutorial/further_reading.rst b/doc/build/tutorial/further_reading.rst
new file mode 100644
index 000000000..d8b792f03
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+++ b/doc/build/tutorial/further_reading.rst
@@ -0,0 +1,44 @@
+.. |prev| replace:: :doc:`orm_related_objects`
+
+.. |tutorial_title| replace:: SQLAlchemy 1.4 / 2.0 Tutorial
+
+.. topic:: |tutorial_title|
+
+      This page is part of the :doc:`index`.
+
+      Previous: |prev|
+
+
+.. _tutorial_further_reading:
+
+Further Reading
+===============
+
+The sections below are the major top-level sections that discuss the concepts
+in this tutorial in much more detail, as well as describe many more features
+of each subsystem.
+
+Core Essential Reference
+
+* :ref:`connections_toplevel`
+
+* :ref:`schema_toplevel`
+
+* :ref:`expression_api_toplevel`
+
+* :ref:`types_toplevel`
+
+ORM Essential Reference
+
+* :ref:`mapper_config_toplevel`
+
+* :ref:`relationship_config_toplevel`
+
+* :ref:`session_toplevel`
+
+* :doc:`/orm/loading_objects`
+
+
+
+
+