I am wondering if there's any difference between inner join and left join if I am self merging.
Say I use the DOSING data set in the following document
http://www2.sas.com/proceedings/sugi25/25/cc/25p109.pdf
And I condition it on patient ID = patient ID, Then using inner join and left join would create the same result right?
Why not try it and prove it to yourself?
There are plenty of resources that graphically show what joins do.
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