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Diffstat (limited to 'lib/sqlalchemy/sql/expression.py')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index f37faa801..f9a3863da 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -4802,6 +4802,15 @@ class Select(_SelectBase): toremove = set(itertools.chain(*[f._hide_froms for f in froms])) if toremove: + # if we're maintaining clones of froms, + # add the copies out to the toremove list + if self._from_cloned: + toremove.update( + self._from_cloned[f] for f in + toremove.intersection(self._from_cloned) + ) + # filter out to FROM clauses not in the list, + # using a list to maintain ordering froms = [f for f in froms if f not in toremove] if len(froms) > 1 or self._correlate: |