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# Build a short list based on criteria applied to long list

Posted on 2013-12-31
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Experts, ok so  I have a partial list of products in Col A (result set).
There are many duplicate products in the result set (which is ok)

In Col B I have a master list of all products (no duplicates here).

In Col C I have a formula that counts how many times each of the products in the complete list appears in the result set.

Now I want to build a unduplicated short list of just those products from the master list that occur one or more times in Col A.

In SQL no problem, I would just select distinct Col A from Worksheet

Or I would Select Col B  from Worksheet where Col C > 0

How do I achieve the same results using a formula in Excel (without any sql)?

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Question by:bobinorlando
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LVL 81

Accepted Solution

byundt earned 500 total points
ID: 39749267
You can build your list with an array-entered formula like:
=IFERROR(INDEX(B\$1:B\$1000,SMALL(IF(ISNUMBER(MATCH(B\$1:B\$1000,A\$1:A\$100,0)),ROW(B\$1:B\$1000)-ROW(B\$1)+1,""),ROWS(C\$1:C1))),"")
This formula will return an empty string (looks like a blank) once the list of unique values in both lists is exhausted.

To array-enter a formula:
1)  Select the cell
2)  Click in the formula bar
3)  Hold the Control and Shift keys down, then hit Enter
4)  Release all three keys
Excel should respond by adding curly braces { } surrounding your formula. If you don't see them, repeat steps 1 through 4

Note: although the range references may extend beyond your data, array formulas like this one will take a long time to calculate if you use entire columns.
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LVL 81

Expert Comment

ID: 39749282
If you have Excel 2010 or later, you can use the AGGREGATE function in a formula that doesn't need to be array-entered:
=IFERROR(INDEX(A\$1:A\$100,AGGREGATE(15,6,MATCH(B\$1:B\$1000,A\$1:A\$100,0),ROWS(C\$1:C1))),"")
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LVL 8

Expert Comment

ID: 39778359
what if ? if list Column A is master & Column B is common list  & want to find values in column C which is not in B but it is in A? list view?

Thanks
0

LVL 8

Expert Comment

ID: 39778367
``````=IF(ISNA(VLOOKUP(A2,\$B\$2:\$B\$500,1,FALSE)),A2,"")
``````
but is not like list view. & this is not my question, some asked & I solved but he wants in list view & I cant .....so if you feel so pls provide me ....
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