Calculate monthly distribution between two tables
Hi, I've been trying to create a report which estimates the monthly distribution based on two tables. Table 1 contains Year-Month, country and weight based on shipping data. Year-Month Country Weight Kg 2021-01 Norway 15 2021-01 Canada 2 2021-02 Norway 10 2021-02 Brazil 3 Table 2 contains Year-Month, weight, and attributes based on transactions. Year-Month Weight Kg Attribute 1 Attribute 2 Attribute 3 2021-01 12 A A B 2021-01 5 B C A 2021-02 3 C B A 2021-02 9 B B B I'm trying to estimate the distribution of each attribute with each country based weight distribution per month. My plan is to calculate the total attribute weight per month, get a ratio and then distribute it to each country. The total weight per month doesn't need to add upp to the toal attribute weight per month, only the ratios are important. In this example I want the following: 2021-01: Total attribute weight 17 Kg, 12/17 has [A,A,B] and 5/17 has [B,C,A] 2021-02: Total attribute weight 12 Kg, 3/12 has [C,B,A] and 9/12 has [B,B,B] The end table should then show Year-month Country Attribute Weight Kg Attribute 1 Attribute 2 Attribute 3 2021-01 Norway 12*(12/17) A A B 2021-01 Norway 12*(5/17) B C A 2021-01 Canada 5*(12/17) A A B 2021-01 Canada 5*(5/17) B C A 2021-02 Norway 10*(3/12) C B A 2021-02 Norway 10*(9/12) B B B 2021-02 Brazil 3*(3/12) C B A 2021-02 Brazil 3*(9/12) B B B Any help regarding this would be greatly apprechiated!