Concatenate multiple results from an index match

Question

I\'m trying to concat multiple results from an index match into one cell. Here is an example data set I\'m working with:

My desired results:

<

Answer 1

Use the newer TEXTJOIN function as an array formula with CSE.

=textjoin("|", true, if(a2:a10=date(2017, 4, 12), c2:c10, text(,)))

If your Excel version does not support TEXTJOIN, search this site for [excel][textjoin] for alternatives. Example: TEXTJOIN for xl2010/xl2013 with criteria