Compare two lists of data: Highlight common records
In this blog post I will demonstrate a conditional formatting formula that will highlight common records in two lists. The image above shows you highlighted records in List 1 that also exists in sheet2.
You can also use a formula to extract shared records or an Excel defined table, if you prefer that. There is also an article written for Comparing two columns and highlight values in common.
There are more links to related articles in the sidebar.
Create named ranges
When constructing a conditional formatting formula you can only reference cells on current sheet. But there is a workaround. The answer is named ranges.
Here is how to create named ranges for this example:
 Go to sheet List 2
 Select cell range A2:A13
 Click in Name box
 Type a name (Year)
 Repeat step 1 to 4 with remaining columns.
Setup COUNTIFS function
The COUNTIFS function looks for duplicate records in the second list (List 2).
COUNTIFS(criteria_range1,criteria1, criteria_range2, criteria2...)
Counts the number of cells specified by a given set of conditions or criteria
In this example:
List 1:Column A  List 2: Column A (Year)
List 1:Column B  List 2: Column B (Asset)
List 1:Column C  List 2: Column C (Cost)
COUNTIFS(YEAR, $A2, ASSET, $B2, COST, $C2)
This formula contains absolute and relative cell references. The conditional formatting formula must look for values in matching columns.
$A2 is a cell reference to values in column A. The column ($A) is absolute but the row (2) is relative. When the conditional formatting formula executes the next row, only the row number changes, example $A3. The named ranges do not change.
If the COUNTIFS function finds one matching record it returns 1, if nothing is found 0 (zero) is returned. 0 (zero) is the equivalent to FALSE so the Conditional formatting will not highlight a cell i FALSE is returned.
Highlight common records from two lists Excel 2007
How to apply conditional formatting formula:
 Select cells A2:C11 (Sheet: List 1)
 Click "Home" tab
 Click "Conditional Formatting" button
 Click "New Rule.."
 Click "Use a formula to determine which cells to format"

Type =COUNTIFS(YEAR, $A2, ASSET, $B2, COST, $C2) in "Format values where this formula is TRUE" window.
(The formula shown in the image above is not used in this article)  Click "Format.." button
 Click "Fill" tab
 Select a color for highlighting cells.
 Click "Ok"
 Click "Ok"
 Click "Ok"
Highlight common records from two lists Excel 2003
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2 Responses to โCompare two lists of data: Highlight common recordsโ
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Is there a way to do this with two worksheets instead of columns in the same worksheet?
I find myself going through each entry looking for the property ID in one worksheet to highlight it in the second worksheet, that way I know what properties are already registered with the City. However, this takes too much time. VLOOKUP will not work in this instance because it only returns one item that matches.
In my situation, I am looking for a function that will return (highlight) all of the matching property IDs in sheet 2 using the entries in sheet 1.
Any help would be greatly appreciated.
Georgina Ram
Sure, if this is the original conditional formatting formula on sheet "Sheet1":
COUNTIFS($A$2:$A$13, $A2, $B$2:$B$13, $B2, $C$2:$C$13, $C2)
and List 2 is now on sheet "Sheet2" then the formula becomes:
COUNTIFS(Sheet2!$A$2:$A$13, $A2, Sheet2!$B$2:$B$13, $B2, Sheet2!$C$2:$C$13, $C2)