other.into("fullName").cast<Right>()

Input DataFrame: rowsCount = 7, columnsCount = 3

name		city	year
firstName	lastName
Alice	Cooper	London	2006
Bob	Dylan	Dubai	1976
Charlie	Daniels	Moscow	2001
Charlie	Chaplin	Milan	1981
Bob	Marley	Tokyo	1991
Alice	Wolf	null	2001
Charlie	Byrd	Moscow	1991

Step 1: DataFrame: rowsCount = 7, columnsCount = 3

fullName		city	year
firstName	lastName
Alice	Cooper	London	2006
Bob	Dylan	Dubai	1976
Charlie	Daniels	Moscow	2001
Charlie	Chaplin	Milan	1981
Bob	Marley	Tokyo	1991
Alice	Wolf	null	2001
Charlie	Byrd	Moscow	1991

Output DataFrame: rowsCount = 7, columnsCount = 3

fullName		city	year
firstName	lastName
Alice	Cooper	London	2006
Bob	Dylan	Dubai	1976
Charlie	Daniels	Moscow	2001
Charlie	Chaplin	Milan	1981
Bob	Marley	Tokyo	1991
Alice	Wolf	null	2001
Charlie	Byrd	Moscow	1991

df.join(other) { name match right.fullName }

Input DataFrame: rowsCount = 7, columnsCount = 5

name		age	city	weight	isHappy
firstName	lastName
Alice	Cooper	15	London	54	true
Bob	Dylan	45	Dubai	87	true
Charlie	Daniels	20	Moscow	null	false
Charlie	Chaplin	40	Milan	null	true
Bob	Marley	30	Tokyo	68	true
Alice	Wolf	20	null	55	false
Charlie	Byrd	30	Moscow	90	true

Output DataFrame: rowsCount = 7, columnsCount = 7

name		age	city	weight	isHappy	city1	year
firstName	lastName
Alice	Cooper	15	London	54	true	London	2006
Bob	Dylan	45	Dubai	87	true	Dubai	1976
Charlie	Daniels	20	Moscow	null	false	Moscow	2001
Charlie	Chaplin	40	Milan	null	true	Milan	1981
Bob	Marley	30	Tokyo	68	true	Tokyo	1991
Alice	Wolf	20	null	55	false	null	2001
Charlie	Byrd	30	Moscow	90	true	Moscow	1991

joined.df

Input DataFrame: rowsCount = 7, columnsCount = 7

name		age	city	weight	isHappy	city1	year
firstName	lastName
Alice	Cooper	15	London	54	true	London	2006
Bob	Dylan	45	Dubai	87	true	Dubai	1976
Charlie	Daniels	20	Moscow	null	false	Moscow	2001
Charlie	Chaplin	40	Milan	null	true	Milan	1981
Bob	Marley	30	Tokyo	68	true	Tokyo	1991
Alice	Wolf	20	null	55	false	null	2001
Charlie	Byrd	30	Moscow	90	true	Moscow	1991

Output DataFrame: rowsCount = 7, columnsCount = 5

name		age	city	weight	isHappy
firstName	lastName
Alice	Cooper	15	London	54	true
Bob	Dylan	45	Dubai	87	true
Charlie	Daniels	20	Moscow	null	false
Charlie	Chaplin	40	Milan	null	true
Bob	Marley	30	Tokyo	68	true
Alice	Wolf	20	null	55	false
Charlie	Byrd	30	Moscow	90	true

joined.df

Input DataFrame: rowsCount = 7, columnsCount = 7

name		age	city	weight	isHappy	city1	year
firstName	lastName
Alice	Cooper	15	London	54	true	London	2006
Bob	Dylan	45	Dubai	87	true	Dubai	1976
Charlie	Daniels	20	Moscow	null	false	Moscow	2001
Charlie	Chaplin	40	Milan	null	true	Milan	1981
Bob	Marley	30	Tokyo	68	true	Tokyo	1991
Alice	Wolf	20	null	55	false	null	2001
Charlie	Byrd	30	Moscow	90	true	Moscow	1991

Output DataFrame: rowsCount = 7, columnsCount = 5

name		age	city	weight	isHappy
firstName	lastName
Alice	Cooper	15	London	54	true
Bob	Dylan	45	Dubai	87	true
Charlie	Daniels	20	Moscow	null	false
Charlie	Chaplin	40	Milan	null	true
Bob	Marley	30	Tokyo	68	true
Alice	Wolf	20	null	55	false
Charlie	Byrd	30	Moscow	90	true