Question: How do I filter common values between two ranges using array formula in excel?

Answer:

common-values-in-range-one-and-two

Formula in B12:

=INDEX(One, MIN(IF((COUNTIF(Two, One)>0)+COUNTIF(B12:$B$12, One)=1, ROW(One)-MIN(ROW(One))+1, "")), MATCH(0, NOT(COUNTIF(Two, INDEX(One, MIN(IF((COUNTIF(Two, One)>0)+COUNTIF(B12:$B$12, One)=1, ROW(One)+1, ""))-MIN(ROW(One)), , 1)))+COUNTIF(B12:$B$12, INDEX(One, MIN(IF((COUNTIF(Two, One)>0)+COUNTIF(B12:$B$12, One)=1, ROW(One)+1, ""))-MIN(ROW(One)), , 1)), 0)) + CTRL + SHIFT + ENTER copied down as far as necessary.

Named ranges
One (B2:D4)
Two (B7:E10)
What is named ranges?

How to implement array formula to your workbook
Change named ranges. If your list starts at, for example, F2. Change B12:$B$12  in the above formulas to F1:$F$1.

Download excel example file.
Filter common values from two ranges.xls
(Excel 97-2003 Workbook *.xls)

Functions in this article:

IF(logical_test;[value_if:true];[value_if_false])
Checks whether a condition is met, and returns one value if TRUE, and another value if FALSE

INDEX(array,row_num,[column_num])
Returns a value or reference of the cell at the intersection of a particular row and column, in a given range

SMALL(array,k) Returns the k-th smallest row number in this data set.

NOT(logical)
Changes FALSE to TRUE or TRUE to FALSE

MATCH(lookup_value;lookup_array; [match_type]
Returns the relative position of an item in an array that matches a specified value

INDEX(array,row_num,[column_num])
Returns a value or reference of the cell at the intersection of a particular row and column, in a given range

COUNTIF(range,criteria)
Counts the number of cells within a range that meet the given condition

MIN(number1,[number2])
Returns the smallest number in a set of values. Ignores logical values and text

This blog article is one out of five articles on the same subject.

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