hide or delete duplicates

have you tried the remove duplicates function? You can select (or deselect) the columns you want to ignore like columns A and C and it will remove the duplicates that are duplicated in columns A and C while ignoring if they are different in column B.
try it in a test book to see.

Welcome (back) to the forum.

Thanks for your question. However, we have just found out that you have posted the same question elsewhere.... and haven't told us. Feel free to cross-post on other sites...

But. Every forum has its rules. Please see Forum Rule #3 about cross-posting. So.

Do not keep it a secret. We all are willing to give you our time, freely. However, some of us (especially me!!) get very annoyed if we waste our time developing a solution for you, when you already have a nice solution elsewhere. All we ask is that you show us some respect and tell us:

1) if you have cross-posted, and

2) the URL of the cross posts.

That way, those of us who don't want to waste their time can quickly check to see if you're already happy with another solution.

(Note: this requirement is not optional. No help to be offered until the link is provided.)

and while you're doing that...

Will you please attach a SMALL sample Excel workbook (10-20 rows of data is usually enough)? However, please give us an indication of the approximate number of rows of data you want the solution to work with (100, 1000, 100,000 or whatever). Please DO NOT attach a picture of an Excel sheet (I do not have the patience to re-type any/all your stuff before starting).

1. It does NOT have to be your real sheet - mock up a SAMPLE if you need to. But not 1000's of rows!!! It makes manual checking so tedious. Whatever you do... make sure that all confidential information is removed first!!

2. Make sure that your sample data are truly REPRESENTATIVE of your real data. For example, don't show text in a column if it's really a number. The use of unrepresentative data is very frustrating and can lead to long delays in reaching a solution.

3. Make sure that your desired solution is also shown (mock up the results manually). To be honest, I am not interested in seeing a non-working formula... or a pile of blank cells. However, I am very interested in seeing your EXPECTED results in their EXPECTED location.

4. Try not to use merged cells. They cause lots of problems and are DEFINITELY best avoided!

Unfortunately the attachment icon doesn't work at the moment. So,... instead click on Go Advanced (below the Edit Window) while composing your reply, then scroll down to and click on Manage Attachments and the Upload window will open. Click on Browse and navigate to (and double-click) the file icon that you want to attach, then click on Upload and then on Close this Window to return to the Edit window. When you have finished composing your post, click on Submit Post.

See post #3 and please comply with the request therein.