Postgres 9.4: invalid input syntax for type boolean

Database: Postgres 9.4.24 Python: 2.7.15 64 bit SQLAlchemy: 1.3.12

SQLAlchemy is generating the following SQL (edited for clarity) which seems to be invalid on this version of Postgres:

SELECT
	project_users.id AS project_users_id,
	project_users.user_id AS project_users_user_id
FROM
	users,
	project_users
	LEFT OUTER JOIN users AS users_1 ON users_1._id = project_users.user_id
WHERE (project_users.project, users._id = project_users.user_id)
IN(('4c472b93-ead5-ee93-b56e-478cb0bc4dc5', '5b71cfa0d2255300289e4d63'))

The resultant error is:

Query 1 ERROR: ERROR:  invalid input syntax for type boolean: "5b71cfa0d2255300289e4d63"
LINE 9: IN(('4c472b93-ead5-ee93-b56e-478cb0bc4dc5', '5b71cfa0d225530...

The python code looks like:

class ProjectUser(BaseModel):
    __tablename__ = 'project_users'

    id = Column(fields.Integer, primary_key=True, autoincrement=True)
    user_id = Column(fields.UID, ForeignKey(User._id), nullable=False)
    project = Column(fields.UID, ForeignKey(Project.uid), nullable=False)
    user = relationship("User", lazy='select')

class User(BaseModel):
    __tablename__ = 'users'

    _id = Column(fields.UID, nullable=False)

with read_only_transaction() as session:
    query = session.query(ProjectUser)
    query = query.options(joinedload(ProjectUser.user))

    project_users = query.filter(tuple_(ProjectUser.project, ProjectUser.user).in_(project_user_ids)).all()

What went wrong?

[zzzeek]

the ideal is things like that would work. but the" try it and see if it works, or explodes" is actually what motivates the name “alchemy”. so dust yourself off and try again! 😃

[conartist6]

Thanks for helping me catch that… It would be nice to have that support (or an error) eventually, but for now I’m unblocked and at least if anyone else makes this same typo they’ll find this issue and know what they did wrong : )