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

### 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?

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

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".