Hi,
I have a sheet where I'm wanting to count unique values in column A where Column B is not blank or is greater than zero. Please see the attached sample file will hopefully make it easier to understand.
I realise I could achieve this with a pivot table, but ideally I'd like a formula as it would makes things a lot easier for me with other tasks I have on the real sheet.
Any help or advice would be great!
One way, with an array formula:
=SUM(IF($B$2:$B$33>0,1/COUNTIFS($A$2:$A$33,$A$2:$A$33,$B$2:$B$33,">0")))
Glenn
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Temporary addition of accented to illustrate ongoing problem to the TT: L? fh?ile P?draig sona dhaoibh
Oops.
Array Formulae are a little different from ordinary formulae in that they MUST be confirmed in the FIRST CELL ONLY by pressing CTRL+SHIFT+ENTER to activate the array, not just ENTER. After that, the array can be dragged down as normal, to cover the desired range.
You will know the array is active when you see curly brackets { } - or "curly braces" for those of you in the USA, or "flower brackets" for those of you in India - appear around the outside of your formula. If you do not use CTRL+SHIFT+ENTER you will (almost always) get an error message or an incorrect answer. Press F2 on that cell and try again.
Don't type the curly brackets yourself - it won't work...
Another way:
=SUM(--(FREQUENCY(IF($B$1:$B$16>0,MATCH($A$1:$A$16,$A$1:$A$16,0)),ROW($B$1:$B$16)-ROW(B1)+1)>0))
... confirmed by pressing CTRL+SHIFT+ENTER to activate the array, not just ENTER. You will know the array is active when you see curly braces { } appear around your formula. If you do not CTRL+SHIFT+ENTER you will get an error or a clearly incorrect answer.
Ali
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Sorted, thanks guys!
You're welcome and thanks for the rep.
Glad to have helped and ditto.
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