Select multiple (non-aggregate function) columns with GROUP BY

Question

I am trying to select the max value from one column, while grouping by another non-unique id column which has multiple duplicate values. The original database looks somethin

Answer 1

Try using a virtual table as follows:

SELECT vt.*,c.name FROM(
SELECT c.mukey, Max(c.comppct_r) AS ComponentPercent
FROM c
GROUP BY c.muke;
) as VT, c 
WHERE VT.mukey = c.mukey