I have two columns:
Col A Col B
01.02.2020 17
03.11.2020 24
03.11.2020 12
As I stated in another question, I tried to sum Col B, based on the month in Col A. The solution was the following formula (without the sort):
=ARRAYFORMULA(
SUMIF(
MID(A:A, 4, 2),
SORT(UNIQUE(MID(FILTER(A3:A, A3:A <> ""), 4, 2))),
B:B
)
)
Something I missed was the population of missing months. Therefore my question is: How can I populate the result table with the missing months and zeroes until values are entered? The desired output for the table above would be:e
Col A Col B Col C
01.02.2020 17 0
03.11.2020 24 17
14.12.2020 100 0
03.11.2020 12 0
0
0
0
0
0
0
36
100
If just doing it for the current year, this should be enough
=ArrayFormula(sumif(mid(A2:A,4,2),sequence(12),B2:B))