Filtering joins filter rows from x based on the presence or absence of matches in y:
semi_join() return all rows from x with a match in y.
anti_join() return all rows from x without a match in y.
# a ...……
Filtering joins filter rows from x based on the presence or absence of matches in y:
semi_join() return all rows from x with a match in y.
anti_join() return all rows from x without a match in y.……