[Sqlalchemy-tickets] Issue #3405: query.update check, warning in 0.9 execption in 1.0, incorrect for pypy (zzzeek/sqlalchemy)

[Mike B. <iss...@bi...>]

New issue 3405: query.update check, warning in 0.9 execption in 1.0, incorrect for pypy
https://bitbucket.org/zzzeek/sqlalchemy/issue/3405/queryupdate-check-warning-in-09-execption

Mike Bayer:


```
#!python

from sqlalchemy import *
from sqlalchemy.orm import *
from sqlalchemy.ext.declarative import declarative_base

Base = declarative_base()


class A(Base):
    __tablename__ = 'a'
    id = Column(Integer, primary_key=True)
    data = Column(String)


e = create_engine("sqlite://", echo=True)
Base.metadata.create_all(e)

s = Session(e)

s.query(A).update({"data": "foo"})


```

run w/ pypy:

```
#!


Traceback (most recent call last):
  File "app_main.py", line 75, in run_toplevel
  File "test.py", line 19, in <module>
    s.query(A).update({"data": "foo"})
  File "/Users/classic/dev/sqlalchemy/lib/sqlalchemy/orm/query.py", line 2939, in update
    self, synchronize_session, values, update_args)
  File "/Users/classic/dev/sqlalchemy/lib/sqlalchemy/orm/persistence.py", line 1183, in factory
    }, synchronize_session, query, values, update_kwargs)
  File "/Users/classic/dev/sqlalchemy/lib/sqlalchemy/orm/persistence.py", line 1069, in _factory
    return klass(*arg)
  File "/Users/classic/dev/sqlalchemy/lib/sqlalchemy/orm/persistence.py", line 1173, in __init__
    super(BulkUpdate, self).__init__(query)
  File "/Users/classic/dev/sqlalchemy/lib/sqlalchemy/orm/persistence.py", line 1034, in __init__
    self._validate_query_state()
  File "/Users/classic/dev/sqlalchemy/lib/sqlalchemy/orm/persistence.py", line 1052, in _validate_query_state
    (methname, )
InvalidRequestError: Can't call Query.update() or Query.delete() when join(), outerjoin(), select_from(), or from_self() has been called
```

because we are testing `() is ()`, bzzt