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Counting Unique Numbers in List

  1. 03-10-2010, 02:02 PM #1
    ssmith0011984
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    Counting Unique Numbers in List

    Does anyone know of an Excel formula that would count the unique values of the first 11 digits (all digits before the underscore)

    IMAGE_ID
    08676724002_1038260.eps
    08676724006_1130460.eps
    08676724006_1453134.eps
    08676750004_1405277.eps
    08676750006_1101494.eps
    08676750006_1453135.eps
    08676751006_1353510.eps
    08676751302_1096034.eps
    08676751302_1117999.eps
    08676751302_1318708.eps
    08676751302_1336658.eps
    08676751302_1353509.eps
    08676751306_1094061.eps
    08676752004_1405278.eps
    08676752006_1082618.eps
    08676752006_1453136.eps

    and summarize them as such:

    IMAGE_ID COUNT
    08676724002_1038260.eps 1
    08676724006_1130460.eps 2
    08676750004_1405277.eps 1
    08676750006_1101494.eps 2
    08676751006_1353510.eps 1
    08676751302_1096034.eps 5
    08676751306_1094061.eps 1
    08676752004_1405278.eps 1
    08676752006_1082618.eps 2
    Attached Files Attached Files
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  2. 03-10-2010, 02:11 PM #2
    NBVC
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    Re: Counting Unique Numbers in List

    You can do this in a few steps...

    1. in B4, enter formula: =LEFT(A4,11) copied down

    2. Enter a title in B3

    3. Select B3:B19 and go to Data|Advanced Filter.

    4. Select Copy to Another location and enter a cell, say, F3 and select Unique Records Only,

    5. Enter formula in G4: =VLOOKUP(F4&"*",$A$4:$A$19,1,0) copied down

    6. Enter formula in H4: =COUNTIF($A$4:$A$19,F4&"*") copied down.
    Where there is a will there are many ways.

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