Add missing changelog note for #4109

No changelog note was written at all for #4109 despite
this feature being released as of 1.2.0b3 (based on merge
date of 10/10/2017 and 1.2.0b3 release date of 10/13/2017

Change-Id: Ic4bcdaad9450cb86ba0e7cd6a18dee48c21ab592
Fixes: #4109

diff --git a/doc/build/changelog/changelog_12.rst b/doc/build/changelog/changelog_12.rst
index 022bb8452b15babfd7feac3909c211148815ea30..2e72321f5a89c23b76248bf55d5375d621d5ee47 100644 (file)
--- a/doc/build/changelog/changelog_12.rst
+++ b/doc/build/changelog/changelog_12.rst
@@ -18,6 +18,22 @@
     :version: 1.2.0b3
     :released: October 13, 2017
 
+    .. change::
+        :tags: feature, postgresql
+        :tickets: 4109
+
+        Added a new flag ``use_batch_mode`` to the psycopg2 dialect.  This flag
+        enables the use of psycopg2's ``psycopg2.extras.execute_batch``
+        extension when the :class:`.Engine` calls upon
+        ``cursor.executemany()``. This extension provides a critical
+        performance increase by over an order of magnitude when running INSERT
+        statements in batch.  The flag is False by default as it is considered
+        to be experimental for now.
+
+        .. seealso::
+
+            :ref:`change_4109`
+
     .. change::
         :tags: bug, mssql
         :tickets: 4061

diff --git a/doc/build/changelog/migration_12.rst b/doc/build/changelog/migration_12.rst
index 56f671f1880421c8e3773a83e09eb55c2441a406..e78c44fd79a01a3f6629ca3c7aed9b7f93a42c83 100644 (file)
--- a/doc/build/changelog/migration_12.rst
+++ b/doc/build/changelog/migration_12.rst
@@ -1430,6 +1430,7 @@ on by default in a future release.
 
     :ref:`psycopg2_batch_mode`
 
+:ticket:`4109`
 
 .. _change_3959: