Join tool dropping data that doesn't join

Question

I'm trying to tie together two data sets with a join tool, but it's only keeping the data where the match rules are met. I'm trying to keep all data from the left data set even if there's not a match. Is there a setting to change this? Would unionizing the left output with the joined output be my best route?

StephenRuhl · Accepted Answer

You are correct.  A union after the join to bring in the left data would perform a Left Join.  The Join output only gives the Inner Join.