Sumproduct or alternative

[stagnut]

Hi,
I have been using a sumproduct formula for some years, and although it works fine I was wondering if there was an alternative way of getting the same result.

In C8 copied down =SUMPRODUCT(($A8>=$A$3:$A$4)*1,($B8<=$B$3:$B$4)*1,($C$3:$C$4)) to show how many are in each hour

Start	Finish	Staff
22:00	04:00	10
00:00	06:00	28
21:00	22:00	0
22:00	23:00	10
23:00	00:00	10
00:00	01:00	38
01:00	02:00	38
02:00	03:00	38
03:00	04:00	38
04:00	05:00	28
05:00	06:00	28
06:00	07:00	0
07:00	08:00	0

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[Joe4]

Is there some problem or issue that is causing you to question it and look for other solutions?
SUMPRODUCT formulas are usually some of the more efficient formulas out there, so if it is working the way you want, I would just leave it be.
If the issue is you have huge amounts of data, so the performance might be slow, your best alternative may be to use a database solution, like Access or SQL.

 

[stagnut]

There isn't any problem as all works well. It was something I cobbled together many years ago to count the number of occurrences in a time period pre and post midnight, and as I was just looking at Sumifs I wondered what the better one would be.

 

[Joe4]

From what I have read in the past, I believe that SUMIFS is not any more effiecient than SUMPRODUCT.
So if it is working, there is probably no real incentive to change it.

 

[stagnut]

Ok, many thanks for your advice.