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 = 3, columnsCount = 15

name	path	type	count	unique	nulls	top	freq	mean	std	min	p25	median	p75	max
age	[age]	Int	7	5	0	20	2	28.571429	11.073349	15	20.0	30.0	38.3	45
firstName	[name, firstName]	String	7	3	0	Charlie	3	null	null	Alice	Alice	Bob	Charlie	Charlie
lastName	[name, lastName]	String	7	7	0	Cooper	1	null	null	Byrd	Chaplin	Daniels	Dylan	Wolf