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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2013-10-08 20:06:58 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2013-10-08 20:06:58 -0400 |
| commit | e74627f827542044c1d2087be95e41d4b1b46f24 (patch) | |
| tree | 271f25fc6cc032008f2a61609b35a2f5e01dfa3e /lib/sqlalchemy/sql/selectable.py | |
| parent | 9df4651fba6d1cd3d2b490f58263cc45a81788f4 (diff) | |
| download | sqlalchemy-e74627f827542044c1d2087be95e41d4b1b46f24.tar.gz | |
A :func:`.select` that is made to refer to itself in its FROM clause,
typically via in-place mutation, will raise an informative error
message rather than causing a recursion overflow.
[ticket:2815]
Diffstat (limited to 'lib/sqlalchemy/sql/selectable.py')
| -rw-r--r-- | lib/sqlalchemy/sql/selectable.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/selectable.py b/lib/sqlalchemy/sql/selectable.py index e06262c6d..43d5a084c 100644 --- a/lib/sqlalchemy/sql/selectable.py +++ b/lib/sqlalchemy/sql/selectable.py @@ -1936,6 +1936,9 @@ class Select(HasPrefixes, SelectBase): def add(items): for item in items: + if item is self: + raise exc.InvalidRequestError( + "select() construct refers to itself as a FROM") if translate and item in translate: item = translate[item] if not seen.intersection(item._cloned_set): |