An example would be awesome .. I've never used a map side join (though I'm searching on that now .. )
Tom On Wed, Oct 10, 2012 at 3:59 PM, Roberto Sanabria <robe...@stumbleupon.com>wrote: > 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. > > Cheers, > R > > > On Wed, Oct 10, 2012 at 3:05 PM, Tom Hubina <t...@z2live.com> 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! >> >> Tom >> >> >
