Workaround it like that :
if someflag:
try:
base_date = db.other_table.received_timestamp.date()
except:
base_date = db.other_table.date
columns = [(db[table].date - base_date).avg().with_alias('avg_date')]
# Works YEAH!
else:
columns = [(db[table].date -
db.other_table.date.date()).avg().with_alias('avg_date')]
Richard
On Wed, Oct 21, 2015 at 12:02 PM, Richard <ml.richard.vez...@gmail.com>
wrote:
> Hello,
>
> I think I just hit a limitation with web2py dal select query build with
> conditions...
>
> Here the issue:
>
> if someflag:
> columns = [(db[table].date -
> db.other_table.received_timestamp.date()).avg().with_alias('avg_date')] #
> This one does work
> # Failed on : 'Field' object has no attribute 'date'
> columns = [lambda: (db[table].date -
> db.other_table.received_timestamp.date()).avg().with_alias('avg_date')] #
> This one does work neither
> # Failed on : 'function' object has no attribute 'type'
> else:
> columns = [(db[table].date -
> db.other_table.date.date()).avg().with_alias('avg_date')] # This one works
>
> db(...).select(*columns)
>
> Is there a way to make aggregate lazy somehow?
>
> Thanks a lot
>
> Richard
>
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