If statement "if column 1 == column 2 then keep row"

Just wondering what the best way to execute this.

eg Column A, Column B & Column C

I want a subset of data to show for all columns and only show the rows where column A == column B. I've been searching for an easy example to follow with no luck.

I think I can get this done with an If statement but not too sure.

Answer 1

[meghannmarie]

Have you tried something like this?

subData = data(colA == colB);