Add some details in the docs for limit(None) and fetch_size()

cassandra/cqlengine/query.py

@@ -753,14 +753,19 @@ class AbstractQuerySet(object):
 
     def limit(self, v):
         """
-        Limits the number of results returned by Cassandra.
+        Limits the number of results returned by Cassandra. Use *0* or *None* to disable.
 
         *Note that CQL's default limit is 10,000, so all queries without a limit set explicitly will have an implicit limit of 10,000*
 
         .. code-block:: python
 
+            # Fetch 100 users
             for user in User.objects().limit(100):
                 print(user)
+
+            # Fetch all users
+            for user in User.objects().limit(None):
+                print(user)
         """
 
         if v is None:
@@ -782,7 +787,7 @@ class AbstractQuerySet(object):
         """
         Sets the number of rows that are fetched at a time.
 
-        *Note that driver's default fetch size is 5000.
+        *Note that driver's default fetch size is 5000.*
 
         .. code-block:: python
 

docs/api/cassandra/cqlengine/query.rst

@@ -32,6 +32,8 @@ The methods here are used to filter, order, and constrain results.
 
     .. automethod:: limit
 
+    .. automethod:: fetch_size
+
     .. automethod:: if_not_exists
 
     .. automethod:: if_exists