использование:
=ARRAYFORMULA(QUERY({TEXT(B2:B, "mmmm yyyy"), C2:C},
"select Col1,sum(Col2)
where Col2 is not null
group by Col1
label sum(Col2)''", 0))
![enter image description here](https://i.stack.imgur.com/GD53U.png)
ОБНОВЛЕНИЕ:
=ARRAYFORMULA(IFNA(VLOOKUP(A2:A,
QUERY({TEXT('input 1'!B2:B, "mmmm yyyy"), 'input 1'!C2:C},
"select Col1,sum(Col2)
where Col2 is not null
group by Col1
label sum(Col2)''", 0), 2, 0)))
![0](https://i.stack.imgur.com/84fOS.png)