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Guest
In my database one person with unique code may have multiple rows with same
variables. Consider history of smoking; person with code=40 has three rows,
each row includes id , start age of smoking, end age of smoking and type of
cigarett. As this subject, used two different type f cigarrett , 2 rows
assigned to him. I want to have all of these rows in one row with one id and
multiple columns of variable .
variables. Consider history of smoking; person with code=40 has three rows,
each row includes id , start age of smoking, end age of smoking and type of
cigarett. As this subject, used two different type f cigarrett , 2 rows
assigned to him. I want to have all of these rows in one row with one id and
multiple columns of variable .