whats the SQL you're looking for ? work it out from a SQL perspective first
- get an exact SELECT, then run it straight on that database, to work out what
should be done here. Window functions + DISTINCT + LIMIT/OFFSET sounds like
it's really getting out there, and I'm not even sure what various DB's would be
doing in response to that.
On May 16, 2012, at 10:05 AM, Eduardo wrote:
> To put it more clear why:
> rows = session.query(*[func.count().over().label("count")]+map(lambda column:
> MyClass.__dict__[columns],columns)).filter(...).limit(n).offset(m).all()
> works and
> rows = session.query(*[func.count().
> over().label("count")]+map(lambda column:
> MyClass.__dict__[columns],columns)).filter(...).distinct().limit(n).offset(m).all()
> does not?
> Thanks
>
>
>
>
>
> Am Mittwoch, 16. Mai 2012 12:07:26 UTC+2 schrieb Eduardo:
> Hello,
> I have got a query of the following type:
>
> rows = session.query(*[func.count().over().label("count")]+map(lambda column:
> MyClass.__dict__[columns],columns)).filter(...).limit(n).offset(m).all()
>
> it returns the number of results together with values of selected columns.
> The problem is when I try to apply the distinct query I see that
> func.count().over().label("count") does not return correct results, that is,
> it returns the number of results for the query by which the distinct function
> is omitted.
> Is there any workaround for this problem?
> The query contains no joins.
> Thank you
> ED
>
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