added a comment for unbuffered_row
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 7fc5ee5..defac54 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -102,6 +102,7 @@
- Added PDO support for create_database(), drop_database and drop_table() in :doc:`Database Forge <database/forge>`.
- Added MSSQL, SQLSRV support for optimize_table() in :doc:`Database Utility <database/utilities>`.
- Improved CUBRID support for list_databases() in :doc:`Database Utility <database/utilities>` (until now only the currently used database was returned).
+ - Added unbuffered_row() function for getting a row without prefetching whole result (consume less memory)
- Libraries