Hi,
I was googling around for a solution of a map/reduce where I will be able
to perform a distinct/unique count of user ids, but I wasn't able to find a
concrete solution/answer to this topic. My case is to count the unique
users per day for example as well as other criteria.
I have for example the following JSON documents of events:
{"user":"user1", "color":"blue"}
{"user":"user1", "color":"blue"}
{"user":"user1", "color":"red"}
{"user":"user2", "color":"blue"}
And with my map/reduce view I want to do the following
* number of distinct users per color
{ color: blue, count: 2}
{ color: red, count: 1}
in SQL terms
select color, count(distinct user) as users from test group by color
Thanks
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