I recently noticed a mistake in my calculation, and I've identified the root cause of the problem: it seems that I mistakenly used the SUMIF function in Google Sheets' ARRAYFORMULA.
I have the sample spreadsheet here.
I wrote the ARRAYFORMULA function that results in column C, which I thought would be the same with the formula in column B.
The formula in column C:
=ARRAYFORMULA(SUMIF(H$3:H$6&I$3:I$6,"<="&A3:A31&">="&A3:A31,G$3:G$6))
The formula in column B:
=SUMIFS(G$3:G$6,H$3:H$6,"<="&A3,I$3:I$6,">="&A3)
In essence, I want to get the value for each date based on predefined values with their own periods.
Please, use this formula in the cell C3:
=ARRAYFORMULA(MMULT(IF((A3:A31>=TRANSPOSE(H3:H5))*
(A3:A31<=TRANSPOSE(I3:I5))=1,TRANSPOSE(G3:G5),0),ROW(G3:G5)^0))