Hello,
I am a QlikSense new user. I am trying to see how I can create new calculated fields within Qlik Sense to be able afterwards to use predictive models.
Indicative example:
* To produce predictive variables, I need to enrich each row of the db ("shopping actions" table) with a new field. Each row represents a shopping action from a customer abc (customer id, payment status, venue date,...). For row "x", I need to have a field (column to add) describing "past buying behaviour from this customer" corresponding at the "x" date in this row (venue date).
I need to go through the whole "shopping actions" table focusing only on rows where customer id = "abc" AND venue date < venue date of row "x".
Below and example:
* the fields 1 to 5 are given from client
* the fields from 6 and 7 should be calculated and based on cutomers history
** example: customer 321 came 3 times
*****the 1st stime he was new and then no field to calculate as no history
*****the 2nd time
************value "28" is calculated from difference between current venue date and last venue date //
************value "Paid" is calculated from payment status in his last shoppingAction column.
| ShoppingAction id | customerid | Category | Venue date | Payment status | #days since last Venue | Last Payment status |
| 35158497 | 855 | food | 29/09/2016 | Paid | 17 | Paid |
| 54659217 | 321 | food | 04/01/2017 | Unpaid | unknown | unknow |
| 21548956 | 321 | non food | 01/02/2017 | Unpaid | 28 | Unpaid |
| 32658754 | 215 | food | 02/03/2017 | Paid | 1 | Paid |
| 54659887 | 321 | non food | 01/05/2017 | Paid | 89 | Unpaid |
| 15847989 | 145 | non food | 27/09/2017 | Paid | 2 | Paid |
Thank you for any help.
Kind Regards,
Mohamed.
