Author: Oscar Cronquist Article last updated on December 03, 2010

Unique values are values existing only once in a range.

BB and CC exists once in the "List" above. They are unique values.

### Array formula in B12:

=INDEX(tbl, MIN((IF((COUNTIF(tbl, tbl)=1)*(COUNTIF(\$B\$11:B11, tbl)=0)*(LEFT(tbl, LEN(\$D\$9))=\$D\$9), ROW(tbl)-MIN(ROW(tbl))+1))), MATCH(0, COUNTIF(\$B\$11:B11, INDEX(tbl, MIN(IF((COUNTIF(\$B\$11:B11, tbl)=0)*(LEFT(tbl, LEN(\$D\$9))=\$D\$9)*(COUNTIF(tbl, tbl)=1), ROW(tbl)-MIN(ROW(tbl))+1)), , 1))+(LEFT(INDEX(tbl, MIN(IF((COUNTIF(\$B\$11:B11, tbl)=0)*(LEFT(tbl, LEN(\$D\$9))=\$D\$9)*(COUNTIF(tbl, tbl)=1), ROW(tbl)-MIN(ROW(tbl))+1)), , 1), LEN(\$D\$9))<>\$D\$9), 0), 1) + CTRL + SHIFT + ENTER

copied down as far as needed.

### Named ranges

tbl (B3:D5)
What is named ranges?

### How to implement array formula to your workbook

Change the named range and "begins with" cell reference (\$D\$9). If your list starts at, for example, F3. Change \$B\$11:B11 in the above formulas to F2:\$F\$2.

Extract-unique-values-begins-with-A-in-a-range.xls
(Excel 97-2003 Workbook *.xls)

ROW(reference) Returns the rownumber of a reference

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

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

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

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

LEFT(text;num_chars) Returns the specified number of characters from the start of textstring

LEN(text)
Returns the number of characters in a text string