Question

Activity table is related to student table and every student has been asked to enroll for minimum 2 activities. While checking the records select student id from activity; lots of duplicate entries were found as students are enrolling for more than one activity. It is becoming difficult to understand who all have still not enrolled for any activity. We can use ______ clause with student_id to resolve the issue.

पर्याय

• Unique

• Distinct

• Where

• Select

Answer 1

Activity table is related to student table and every student has been asked to enroll for minimum 2 activities. While checking the records select student id from activity; lots of duplicate entries were found as students are enrolling for more than one activity. It is becoming difficult to understand who all have still not enrolled for any activity. We can use distinct clause with student_id to resolve the issue.