Question: How do I filter unique values from two ranges combined using array formulas?

Answer:

filter-unique-values-from-two-ranges

Array formula in B13:

=INDEX(_tbl1, MIN(IF(COUNTIF($B$12:B12, _tbl1)=0, ROW(_tbl1)-MIN(ROW(_tbl1))+1)), MATCH(0, COUNTIF($B$12:B12, INDEX(_tbl1, MIN(IF(COUNTIF($B$12:B12, _tbl1)=0, ROW(_tbl1)-MIN(ROW(_tbl1))+1)), , 1)), 0), 1) + CTRL + SHIFT + ENTER

Copy cell B13 and paste it down as far as necessary.

Array formula in D13:

=INDEX(_tbl2, MIN(IF(COUNTIF($D$12:D12, _tbl2)+COUNTIF($B$13:$B$22, _tbl2)=0, ROW(_tbl2)-MIN(ROW(_tbl2))+1)), MATCH(0, COUNTIF($D$12:D12, INDEX(_tbl2, MIN(IF(COUNTIF($D$12:D12, _tbl2)+COUNTIF($B$13:$B$22, _tbl2)=0, ROW(_tbl2)-MIN(ROW(_tbl2))+1)), , 1))+COUNTIF($B$13:$B$22, INDEX(_tbl2, MIN(IF(COUNTIF($D$12:D12, _tbl2)+COUNTIF($B$13:$B$22, _tbl2)=0, ROW(_tbl2)-MIN(ROW(_tbl2))+1)), , 1)), 0), 1) + CTRL + SHIFT + ENTER

Copy cell D13 and paste it down as far as necessary.

The array formula in D13 and below automatically removes common unique distinct values between _tbl1 and _tbl2.

Named ranges
_tbl1 (B2:E5)
_tbl2 (B7:E10)
What is named ranges?

Download excel example file.
filter-unique-distinct-values-from-two-ranges.xlsx
(Excel 2007 Workbook *.xlsx)

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.

ROWS(array) returns the number of rows in a reference or an array

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 thirteen articles on the same subject "unique".

Related posts:

Highlight unique distinct values in two ranges combined using conditional formatting in excel

Count unique values and unique distinct values in three ranges combined in excel

Count unique values and unique distinct values in two ranges combined

Excel 2007/2010 array formula: Filter unique distinct values, sorted and blanks removed

Count unique distinct values in three columns combined in excel