docs: add notes

Author: kenjis

user_guide_src/source/database/query_builder.rst

@@ -1095,12 +1095,17 @@ UpdateBatch
 $builder->updateBatch()
 -----------------------
 
+.. note:: Since v4.3.0, the second parameter ``$index`` of ``updateBatch()`` has
+    changed to ``$constraints``. It now accepts types array, string, or ``RawSql``.
+
 Generates an update string based on the data you supply, and runs the query.
 You can either pass an **array** or an **object** to the method.
 Here is an example using an array:
 
 .. literalinclude:: query_builder/092.php
 
+.. note:: Since v4.3.0, the generated SQL structure has been Improved.
+
 The first parameter is an associative array of values, the second parameter is the where key.
 
 .. note:: All values except ``RawSql`` are escaped automatically producing safer queries.