Here is the scene: You are constructing a report that takes data from a table via a
VLOOKUP function. Being the exacting person you are, you want the report to have a clean and professional look, without any extraneous and distracting
Error Messages.
So, for example, what do you do when you get occasional (and annoying)
#N/A results? The answer, of course, is the use of an
Error-Handling function. There are several functions that can be used to handle errors, and three of the most common are as follows:
•
ISNA – Checks whether a value is
#N/A, and returns TRUE or FALSE
•
ISERROR – Checks whether a value is
any error, and returns TRUE or FALSE
•
ISERR – Checks whether a value is an error,
excluding #N/A and returns TRUE or FALSE
So back to our example where you are getting some
#N/A results while using a
VLOOKUP function. The syntax for the
VLOOKUP function is as follows,
VLOOKUP( value, table_array, index_number, exact_match ), where the:
1. First argument is the
Key Field in the first column of the table.
2. Second argument is the
Table.
3. Third argument is
Row from which you wish to retrieve the result.
4. The fourth argument refers to an
Exact Match (expressed as “
False”). Note: If you wish to retrieve and approximate value, use “True” in the fourth argument.
If
No Exact Match is found for your first argument, then the
VLOOKUP function will return
#N/A
If you wish to concentrate only on
#N/A errors, and return a blank cell when they occur, you can insert the error-handling function, and use the following formula:
IF(ISNA(VLOOKUP( value, table_array, index_number, exact_match )), “”,VLOOKUP( value, table_array, index_number, exact_match ))
If, on the other hand, you wish to
Do Away with the potential for
Any Type Of Error message in your result, (for instance, if the
index_number is greater than the number of columns in
table_array, the
VLOOKUP function will return
#REF!), you can use the
ISERROR function as follows:
IF(ISERROR(VLOOKUP( value, table_array, index_number, exact_match )), “”,VLOOKUP( value, table_array, index_number, exact_match ))
The
Error-Handling functions can be used in a variety of cases other than
VLOOKUP, of course. In fact, if you get used to using these easily to master tools, you may
Never Again produce a report with ugly error values in it!
And that would be Very Cool!