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PySpark Interview Questions and Answers

Question: How can you perform the join operation in PySpark?
Answer: You can use the 'join' method on DataFrames. For example, df1.join(df2, df1['key'] == df2['key'], 'inner') performs an inner join on 'key'.

Example:

result = df1.join(df2, df1['key'] == df2['key'], 'inner')

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