-Re: Rolling MAU computation
Tom Hubina 2012-10-10, 23:04
An example would be awesome .. I've never used a map side join (though I'm
searching on that now .. )
On Wed, Oct 10, 2012 at 3:59 PM, Roberto Sanabria
> I've done this with a map side join using a table that stores days of the
> week. I use that to drive the day im calculating the count for. Let me know
> if you need an example.
> On Wed, Oct 10, 2012 at 3:05 PM, Tom Hubina <[EMAIL PROTECTED]> wrote:
>> I'm trying to compute the number of active users in the previous 30 days
>> for each day over a date range. I can't think of any way to do it directly
>> within Hive so I'm wondering if you guys have any ideas.
>> Basically the algorithm is something like:
>> For each day in date range:
>> SELECT day, COUNT(DISTINCT(userid)) FROM logins WHERE day - logins.day
>> < 30;
>> Thanks for your help!