C-06-Q080mediumsingle_mcq
In a join query where both tables have a column named roll, why is result.roll written instead of just roll?
In a join query where both tables have a column named roll, why is result.roll written instead of just roll?
- aTo make the query shorter
- bTo specify which table's roll column is meant, since both tables have it
- cBecause roll is a primary key
- dBecause roll is encrypted