  
  Database backend API
  --------------------
  
  * ...
  
  Dropped support for Oracle 11.2
  -------------------------------
  
  The end of upstream support for Oracle 11.2 is Dec. 2020. Django 1.11 will be
 
</s> remove         return sql, inner_params + params
 </s> add         return sql, inner_params </s> remove         return sql, params
 </s> add         return sql </s> remove         return sql, []
 </s> add         return sql </s> remove         return "django_datetime_trunc('%s', %s, %%s)" % (
            lookup_type.lower(), field_name), [tzname]
 </s> add         return "django_datetime_trunc('%s', %s, %s)" % (
            lookup_type.lower(), field_name, self._convert_tzname_to_sql(tzname),
        ) </s> remove             sql, params = connection.ops.datetime_trunc_sql(self.kind, inner_sql, tzname)
 </s> add             sql = connection.ops.datetime_trunc_sql(self.kind, inner_sql, tzname)
* The ``DatabaseOperations.datetime_cast_date_sql()``,
  ``datetime_cast_time_sql()``, ``datetime_trunc_sql()``, and
  ``datetime_extract_sql()`` methods now return only the SQL to perform the
  operation instead of SQL and a list of parameters.
  
  Database backend API
  --------------------
  
* The ``DatabaseOperations.datetime_cast_date_sql()``,
  ``datetime_cast_time_sql()``, ``datetime_trunc_sql()``, and
  ``datetime_extract_sql()`` methods now return only the SQL to perform the
  operation instead of SQL and a list of parameters.
  
  Dropped support for Oracle 11.2
  -------------------------------
  
  The end of upstream support for Oracle 11.2 is Dec. 2020. Django 1.11 will be
keep keep keep keep replace keep keep keep keep keep
 Fixed #27802 -- Unified return value of db backend datetime SQL methods. 
docs/releases/2.0.txt