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Data Manipulation using pandas

Right JoinRight Join

Another type of join is the right one. This join is literally the same as the left join, but with swapped tables (i.e., to perform a right join of table1 to table2 is literally the same as left join of table2 to table1). To perform a right join, set the how = 'right' parameter.

So both data1.merge(data2, on = 'id', how = 'right') and data2.merge(data1, on = 'id', how = 'left') will return the same result (with changed order of columns).

Right Join

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Section 5. Chapter 3