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Perform a left outer join of self and other. Code Example
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))]
Source: spark.apache.org



Python

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Horje