Join ExamsbookAnswer :
Why SELECT * is not preferred in embedded SQL programs?5
Q: Why SELECT * is not preferred in embedded SQL programs?
- Show AnswerHide Answer
- Workspace
Answer :
Explanation :
- If the table structure is changed ( a field is added ), the program will have to be modified. - Program might retrieve the columns which it might not use, leading on I/O over head. - The chance of an index only scan is lost.