[Haskell-cafe] ORM for haskell?
mads_lindstroem at yahoo.dk
Tue Jun 30 17:49:40 EDT 2009
Hi Marc Weber
> Another example: Updating the age of a pupil:
> row = SELECT * FROM pupils where age = 13;
> UPDATE pupils SET age = 14 WHERE id = <the id you got above>
> p = session.query(Pupil).filter(Pupil.age==13).one().age=14
> You don't have to care about ids. you just assign a new value and
> the engine that it should commit.
> So again less chances to get something wrong.
Could you not do in SQL:
UPDATE pupils SET age = 14 WHERE age = 13
That is, without using ids.
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