diff options
Diffstat (limited to 'lib/sqlalchemy/orm/query.py')
| -rw-r--r-- | lib/sqlalchemy/orm/query.py | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/lib/sqlalchemy/orm/query.py b/lib/sqlalchemy/orm/query.py index 999e97394..f6fd07e61 100644 --- a/lib/sqlalchemy/orm/query.py +++ b/lib/sqlalchemy/orm/query.py @@ -723,12 +723,12 @@ class Query(object): loading, the full result for all rows is fetched which generally defeats the purpose of :meth:`~sqlalchemy.orm.query.Query.yield_per`. - Also note that many DBAPIs do not "stream" results, pre-buffering - all rows before making them available, including mysql-python and - psycopg2. :meth:`~sqlalchemy.orm.query.Query.yield_per` will also - set the ``stream_results`` execution - option to ``True``, which currently is only understood by psycopg2 - and causes server side cursors to be used. + Also note that while :meth:`~sqlalchemy.orm.query.Query.yield_per` + will set the ``stream_results`` execution option to True, currently + this is only understood by :mod:`~sqlalchemy.dialects.postgresql.psycopg2` dialect + which will stream results using server side cursors instead of pre-buffer + all rows for this query. Other DBAPIs pre-buffer all rows before + making them available. """ self._yield_per = count |