Question

I need to get last record from db. I’m using sqlalchemy.
At the moment, I’m doing like that:

obj = ObjectRes.query.all()
return str(obj[-1].id)

But it’s too heavy query. How can I get last record better?

Answer 1

Take a look at Query.first(). If you specify a sort on the right column, the first will be your last. An example could look like this:

obj = session.query(ObjectRes).order_by(ObjectRes.id.desc()).first()