Comparing columns in 2 different worksheets, IF Function

[Laura]

Hi there,

I have two seperate worksheets, one contains external data related to all
installs of our product in our customers stores. The other spreadsheet is an
internal worksheet with all the information we have on all the stores. I need
to see if there are any stores listed on the external worksheet that are not
currently on our internal worksheet so that I can then copy the information
over.

Both worksheets use the same identifier and this is what I am trying to do
the comparison on.

I was told that the IF function could be used to do this, however, I cant
get it to work.

Any ideas?

[SteveG]

Laura,

Try this in your external data sheet. Insert a column to the right of your identifying column. In this case I used A as the Company identifier.

=IF(ISERROR(INDEX(Internal!$A$1:$A$11,MATCH(external!A3,Internal!$A$1:$A$11,0))),"Not Found", "Found")

This will put Found or Not Found based on your list of internal id's. If you want, you can then conditionally format the identifiers to color the row if Not Found is populated. Select the entire row and Format>Conditional Format>

Formula is: =$B2="Not Found", select your formatting. Use the format painter to copy this down all of your rows making it easier to identify the missing data.

HTH

Steve

[Dave Peterson]

I would bet that the =match() portion is the part that's doing all the real
work.

maybe just checking that would be sufficient:

=if(iserror(match(external!a3,internal!$a$1:$A$11,0)),"Not found","Found")

SteveG wrote:
>
> Laura,
>
> Try this in your external data sheet. Insert a column to the right of
> your identifying column. In this case I used A as the Company
> identifier.
>
> =IF(ISERROR(INDEX(Internal!$A$1:$A$11,MATCH(external!A3,Internal!$A$1:$A$11,0))),"Not
> Found", "Found")
>
> This will put Found or Not Found based on your list of internal id's.
> If you want, you can then conditionally format the identifiers to color
> the row if Not Found is populated. Select the entire row and
> Format>Conditional Format>
>
> Formula is: =$B2="Not Found", select your formatting. Use the format
> painter to copy this down all of your rows making it easier to identify
> the missing data.
>
> HTH
>
> Steve
>
> --
> SteveG
> ------------------------------------------------------------------------
> SteveG's Profile: http://www.excelforum.com/member.php...fo&userid=7571
> View this thread: http://www.excelforum.com/showthread...hreadid=513377

--

Dave Peterson