I want to override my `Session` such that it performs and `INSERT ON
CONFLICT` whenever I `add` an object.
`merge` is too slow for my use-case: it has to perform a `SELECT` first,
and I want to reduce my latency as much as I can.
Currently this is the standard behaviour:
user = User(id=1, name='John') # suppose we already have a record with
id=1
session.add(user) # this tries to INSERT, which will raise an
Integrity error
session.commit()
I want to be able to do something like this:
user = User(id=1, name='John', update=True)
session.add(user) # this now does INSERT ON CONFLICT DO UPDATE SET ...
session.commit()
and if `update=False` then perform `DO NOTHING`
I assume I will need to monkey-patch around the Insert class but I am not
100% sure. Any idea how to achieve this in an elegant way?
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