> no, from_statement replaces all filtering.

Shouldn't it throw some exception then?

> so, what is it youre trying to do exactly ?

I'm writing DAO module for db access which must be independent of rest
of the system. I'm looking for a class which can be used as a proxy
for SQL results. Query would be good, if it would be possible to have
fully functional Query instance representing any SQL statement. But I
cannot tell users - here you have a Query object, but filtering
sometimes doesn't work! So it seems that if I want to have object-
oriented proxy for SQL results with lazy loading, I must write my own
wrapper.

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