--  distinct * --
Theodore	Diaz	Skilled Manual	Bachelors	28
Stephanie	Cox	Management abcd defg	Bachelors	33
Peter	Nara	Skilled Manual	Graduate Degree	26
Latoya	Shen	Professional	Graduate Degree	25
Apple		Skilled Manual	Bachelors	28
\N	why	Professional	Partial College	38
--  distinct one column --
Skilled Manual
Management abcd defg
Professional
--  distinct two column --
Skilled Manual	Bachelors
Management abcd defg	Bachelors
Skilled Manual	Graduate Degree
Professional	Graduate Degree
Professional	Partial College
--  distinct with where --
Skilled Manual	Bachelors
Management abcd defg	Bachelors
Skilled Manual	Graduate Degree
Professional	Graduate Degree
Professional	Partial College
--  distinct with where, order --
Skilled Manual	Bachelors
Skilled Manual	Graduate Degree
Professional	Graduate Degree