How do I determine whether the data in COL A exists COL B?
How do I determine whether the data in COL A does NOT exist in COL B?

You could use conditional formatting:

1) Click on cell A1
2) Click format, conditional formatting
3) Change Condition 1 to 'formula is'
4) Enter '=COUNTIF(B:B,A1)>0' into the formula space (without quotes)
5) Click the [Format] button and the 'Patterns' tab
6) Choose a colour
7) Click [OK]
8) Click the format painter
9) Click the 'A' at the top of column A

Everything that is highlighted in the colour of your choice is listed in
column B. Everything not coloured is not in column B:

If you need further help, try http://www.contextures.com/tiptech.html under
headings 'conditional formatting'


--
Steve

"gary" <(E-Mail Removed)> wrote in message
news:f38db82f-0b95-4de8-8b60-(E-Mail Removed)...
> How do I determine whether the data in COL A exists COL B?
> How do I determine whether the data in COL A does NOT exist in COL B?
>