Here’s my problem: I need to take two lists, each consisting of many tens of thousands of items, most of them identical between the two lists, and find the relatively few new items in the second list.

I posed this question on a tech advice site, asking if any software existed that could do this. One answer I got included a YouTube video where a guy showed exactly how to do it in Excel, using three separate techniques. The first two were “match” and “vLookup”.

So my question is: Do either of these two techniques have an equivalent in LibreOffice, and if so, where do I find explicit instructions on how to use them?