(contest_id, user_id) is the primary key (combination of columns with unique values) for this table. Each row of this table contains the id of a user and the contest they registered into. Write a ...
- Contest 208, 209, 210 → all 3 users participated → 100%. - Contest 215 → 2 of 3 users participated → 66.67%. - Contest 207 → 1 of 3 users participated → 33.33%. Approach: 1. Group the contest id and ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results