Any reason for GROUP BY clause without aggregation function?

Question

I\'m (thoroughly) learning SQL at the moment and came across the GROUP BYclause.

GROUP BY aggregates or groups the resultset according to t

Answer 1

Group by can used in Two way Majorly
1)in conjunction with SQL aggregation functions
2)to eliminate duplicate rows from a result set

SO answer to your question lies in second part of USEs above described.