Hi,
I have account information on one of my data sets like this:
Registrations:
Name Date_of_Registration
Daniel 2015-12-01
John 2015-10-22
Peter 2014-12-01
I want to use dataflows in order to pivot this data in two ways:
#1 New registrations per year
2014 2015
1 2
#2 New registrations per week
Week 2014 2015
10 0 1
12 1 1
To solve this I've used a mysql that does this (mysql doesn't have a pivot function):
select
sum(case when YEAR (date_of_registration) = 2014 then 1 else 0 end ) Year_2014
sum(case when YEAR (date_of_registration) = 2015 then 1 else 0 end ) Year_2015
from registrations
this works fine for yearly data, however for weekly data I was planning to do something like this:
select
sum(case when WEEK (registration_date) = 30 AND YEAR (registration_date) = 2014 then 1 else 0 end ) Week30_Year2014
sum(case when WEEK (registration_date) = 30 AND YEAR (registration_date) = 2015 then 1 else 0 end ) Week30_Year2015
from registrations
The query above would be fine for showing only two specific weeks, however I would like to have 2010 to 2015 and I don't want to add a sum per week per year.
Is there a better way to do this? Any help is grealy appreciated.
