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Trying to combine duplicate rows into one records

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    Trying to combine duplicate rows into one records

    Hi everyone,

    I am new to this forum and I am have a question regarding combining duplicate rows into one record. I am having a really hard time coming up with an excel formula to perform this task. I want to avoid using a pivotable. I try to follow this example, and the results were ugly. This is the example I used to resolve my issue:


    Spreadsheet is attached. Thank you

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    Re: Trying to combine duplicate rows into one records

    Welcome to the forum.

    This will be easy with PowerQuery, but what should be displayed in other columns?

    Please mock up the first 2-3 rows of result data as you want it to look and post the workbook again.
    Ali


    Enthusiastic self-taught user of MS Excel who's always learning!

    Forum Rules (updated September 2018): please read them here.
    How to use the Power Query code you've been given: help here. More about the Power suite here.
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    Re: Trying to combine duplicate rows into one records

    Hi,

    Thanks again for your help. Refer to the spreadsheet for more details. Before using powerquery, I tried to remove the duplicates for each contractor, and retrieve the oldest start date and latest renewal date, without deleting any other records.
    What I did was sort the contractors by name, sort the start date by the oldest start date, and finally sort by latest renewal date using the sort button. When I use the delete duplicate button, I did not get the results I wanted.
    I attached another spreadsheet. Refer to the section end result on how should the spreadsheet should look like after removing the duplicates.

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    Re: Trying to combine duplicate rows into one records

    This proposal adds a helper column which may be moved and/or hidden for aesthetic purposes.
    The helper column (L) is populated using:
    Formula: copy to clipboard
    Please Login or Register  to view this content.

    The names are populated using:
    Formula: copy to clipboard
    Please Login or Register  to view this content.

    The columns for Active Assignment? through End Date on Vender RQQ are populated using:
    Formula: copy to clipboard
    Please Login or Register  to view this content.

    The column for Last Renewal Date is populated using:
    Formula: copy to clipboard
    Please Login or Register  to view this content.

    Note that conditional formatting is used to hide zero values in the Last Renewal Date column.
    Let us know if you have any questions.
    Consider taking the time to add to the reputation of everybody that has taken the time to respond to your query.

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    Re: Trying to combine duplicate rows into one records

    Hi JetMc,

    Thanks for your help. I have a couple of questions regarding the following formula:

    IFERROR(INDEX(A$2:A$18,AGGREGATE(15,6,(ROW($A$2:$A$18)-ROW($A$1))/($L$2:$L$18=1),ROWS($A$1:$A1))),"")

    1) Where does the 15,6 come from?
    2) How does the / play a role in resolving the problem? This is the first time I have seen division being used to remove duplicates.
    Last edited by vlo2020; 05-27-2020 at 11:50 PM.

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    Re: Trying to combine duplicate rows into one records

    In the AGGREGATE function the first two arguments are for function and options
    The 15 is the function number for SMALL and the 6 is the option for ignore errors.
    ($L$2:$L$18=1) will produce an array of Boolean values (TRUE/FALSE). Mathematically Excel will treat TRUE as 1 and FALSE as zero.
    (ROW($A$2:$A$18)-ROW($A$1)) will produce an array of rows 1 through 17
    The division is used to produce an array where row divided by 1 is that row and a row divided by zero is an error.
    Since the errors are ignored only the rows that have numerical value will be considered by the SMALL function.
    To see this at work utilize the Evaluate Formula feature in the Formulas tab.
    Let us know if you have any questions.

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    Re: Trying to combine duplicate rows into one records

    Thanks JetMc for the clear explanation. Makes sense now

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    Re: Trying to combine duplicate rows into one records

    You're Welcome. Thank You for the feedback and for marking the thread as 'Solved'. I hope that you have a blessed day.

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