>> I need to filter by date and group by group...
> You can use the second with group_level=1 and get all the groups at the same
> time. And you can use _count
I'm afraid this is not so easy...
Using a filter by date will also *group* by date.
Let's take a very simple example...
Here are keys emitted by a map:
[2012, 'A']
[2012, 'B']
[2012, 'C']
[2013, 'A']
[2013, 'A']
[2013, 'A']
[2013, 'C']
[2014, 'A']
[2014, 'A']
[2014, 'B']
If we query it with `_count` as the reduce function, `group=true`,
`startkey=[2013]` and `endkey=[2014,{}]`, we'll get:
[2013, 'A'] -> 3
[2013, 'C'] -> 1
[2014, 'A'] -> 2
[2014, 'B'] -> 1
Boaz will need additional computation to get:
'A' -> 5
'B' -> 1
'C' -> 1
Regards,
Aurélien
