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First and Last Instance within Date Range

  1. #1
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    First and Last Instance within Date Range

    Hi,

    I'm trying to return the first and last instance of a blank cell within a date range without doing an array formula (the master spreadsheet is very large, so trying to make it as "quick" as possible).

    R1: Start date in range to be searched (will be manually updated)
    R2: End date in range to be searched (will be manually updated)

    Column O: List first instance of blank cell within date range identified in R1 (hoping to automate)
    Column P: List last instance of blank cell within date range identified in R2 (hoping to automate)

    I've manually entered the values in columns O&P in red text, so you can see what values I'm hoping to return. Any help would be greatly appreciated!

    Thank you!
    Attached Files Attached Files

  2. #2
    Forum Expert 63falcondude's Avatar
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    Re: First and Last Instance within Date Range

    Try these:

    O4 =IFERROR(INDEX(D$3:L$3,INDEX(MATCH(1,(D$3:L$3>=S$1)*(D$3:L$3<=S$2)*(D4:L4=""),0),0)),"")

    P4 =IFERROR(LOOKUP(2,1/((D$3:L$3>=S$1)*(D$3:L$3<=S$2)*(D4:L4="")),D$3:L$3)+6,"")

    Drag both formulas down.

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    Re: First and Last Instance within Date Range

    Thanks! It seems to be working. Out of curiosity, is there another way to achieve the formula in column P without using a look-up function?

  4. #4
    Forum Moderator AliGW's Avatar
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    Re: First and Last Instance within Date Range

    Why do you wish to avoid the LOOKUP function?
    Ali


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