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Diffstat (limited to 'lib/sqlalchemy/orm/strategies.py')
| -rw-r--r-- | lib/sqlalchemy/orm/strategies.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/strategies.py b/lib/sqlalchemy/orm/strategies.py index 5f039aff7..53cc99ccd 100644 --- a/lib/sqlalchemy/orm/strategies.py +++ b/lib/sqlalchemy/orm/strategies.py @@ -1524,6 +1524,16 @@ class SubqueryLoader(PostLoader): # orig_compile_state = compile_state_cls.create_for_statement( # orig_query, None) + if orig_query._is_lambda_element: + util.warn( + 'subqueryloader for "%s" must invoke lambda callable at %r in ' + "order to produce a new query, decreasing the efficiency " + "of caching for this statement. Consider using " + "selectinload() for more effective full-lambda caching" + % (self, orig_query) + ) + orig_query = orig_query._resolved + # this is the more "quick" version, however it's not clear how # much of this we need. in particular I can't get a test to # fail if the "set_base_alias" is missing and not sure why that is. |