diff options
| -rw-r--r-- | lib/sqlalchemy/orm/query.py | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/query.py b/lib/sqlalchemy/orm/query.py index d5f0ef0ca..596445918 100644 --- a/lib/sqlalchemy/orm/query.py +++ b/lib/sqlalchemy/orm/query.py @@ -1073,7 +1073,14 @@ class Query(object): SELECT * FROM (SELECT * FROM X UNION SELECT * FROM y UNION SELECT * FROM Z) - + + Note that many database backends do not allow ORDER BY to + be rendered on a query called within UNION, EXCEPT, etc. + To disable all ORDER BY clauses including those configured + on mappers, issue ``query.order_by(None)`` - the resulting + :class:`.Query` object will not render ORDER BY within + its SELECT statement. + """ |