right join
RIGHT JOIN: Matching part from both
table and unmatching part from right table.right join
RIGHT JOIN: Matching part from both
table and unmatching part from right table.right outer vs left outer join
LEFT OUTER JOIN:
is used when retrieving data from
multiple tables and will return
left table and any matching right table records.
RIGHT OUTER JOIN:
is used when retrieving data from
multiple tables and will return right
table and any matching left table recordsleft join
Matching part from both table and unmatching part from left table.Perform a left outer join of self and other.
x = sc.parallelize([("a", 1), ("b", 4)])
y = sc.parallelize([("a", 2)])
sorted(x.leftOuterJoin(y).collect())
# [('a', (1, 2)), ('b', (4, None))]Copyright © 2021 Codeinu
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