Practice problems across 75+ categories
Practice problems frequently asked at Database • 324 problems | 120 Easy | 135 Medium | 61 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 121 | Find Products with Valid Serial Numbers | Easy | Database |
| 122 | Find Students Who Improved | Medium | Database |
| 123 | Find the Missing IDs | Medium | Database |
| 124 | Find the Quiet Students in All Exams | Hard | Database |
| 125 | Find the Start and End Number of Continuous Ranges | Medium | Database |
| 126 | Find the Subtasks That Did Not Execute | Hard | Database |
| 127 | Find the Team Size | Easy | Database |
| 128 | Find Third Transaction | Medium | Database |
| 129 | Find Top Performing Driver | Medium | Database |
| 130 | Find Top Scoring Students | Medium | Database |
| 131 | Find Top Scoring Students II | Hard | Database |
| 132 | Find Total Time Spent by Each Employee | Easy | Database |
| 133 | Find Trending Hashtags | Medium | Database |
| 134 | Find Trending Hashtags II | Hard | Database |
| 135 | Find Users With Valid E-Mails | Easy | Database |
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