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Sum and count duplicates in an array

  1. #1
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    Sum and count duplicates in an array

    Hi All

    I have quite a large data(150K rows) of invoice references and amounts and I've added a conditional format to indicated duplicate references. I'm struggling to get a formula to calculate the total unique number of transactions and amount if he conditional format is "yes" in other words its a duplicate. Grateful if anybody could help.

    Many thanks
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  2. #2
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    Re: Sum and count duplicates in an array

    Try the following array formula


    {=SUM(IF(D5:D13="Yes",C5:C13))}

    Ctl+Shift+Enter



    HTH

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    Forum Expert José Augusto's Avatar
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    Re: Sum and count duplicates in an array

    Hi
    Use this formula in D5 to see duplicates and copy down
    Formula: copy to clipboard
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    Use the following formulas to get the results
    Sum of Amount of Unique Transaction if conditional format is "yes"(duplicate)
    Formula: copy to clipboard
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    Total number of UniqueTransactions if conditional format is "yes"(duplicate)
    Formula: copy to clipboard
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    Forum Expert shukla.ankur281190's Avatar
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    Re: Sum and count duplicates in an array

    Try

    D5=IF(SUMPRODUCT(--($B$5:$B$13&$C$5:$C$13=B5&C5))>1,"Yes","NO")

    J17=SUM(IF(FREQUENCY(IF(D5:D13="Yes",MATCH(B5:B13,B5:B13,0),0),ROW(B5:B13)-ROW(B5)+1)>0,C5:C13,0)) with control+Shift+Enter

    J18=SUM(--(FREQUENCY(IF(D5:D13="Yes",MATCH(B5:B13,B5:B13,0),0),ROW(B5:B13)-ROW(B5)+1)>0)) with control+Shift+Enter.

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  5. #5
    Forum Expert Tony Valko's Avatar
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    Re: Sum and count duplicates in an array

    Quote Originally Posted by José Augusto View Post
    Use this formula in D5 to see duplicates and copy down
    =IF(COUNTIF(C$5:C5,C5)>1,"Yes","No")
    I have quite a large data(150K rows)
    After you copy that formula to 150,000 rows this is how many cells you're referencing:

    =SUMPRODUCT(ROW(A1:A150000))

    Biff
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  6. #6
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    Re: Sum and count duplicates in an array

    Guys, this is awesome! Shukla I used your formula and it works pretty cool. Many thanks.

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