Practice problems across 75+ categories
Practice problems frequently asked at Database • 324 problems | 120 Easy | 135 Medium | 61 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 136 | Find Total Time Spent by Each Employee | Easy | Database |
| 137 | Find Trending Hashtags | Medium | Database |
| 138 | Find Trending Hashtags II | Hard | Database |
| 139 | Find Users With Valid E-Mails | Easy | Database |
| 140 | Find Valid Emails | Easy | Database |
| 141 | Finding the Topic of Each Post | Hard | Database |
| 142 | First and Last Call On the Same Day | Hard | Database |
| 143 | First Letter Capitalization | Hard | Database |
| 144 | First Letter Capitalization II | Hard | Database |
| 145 | Fix Names in a Table | Easy | Database |
| 146 | Fix Product Name Format | Easy | Database |
| 147 | Flight Occupancy and Waitlist Analysis | Medium | Database |
| 148 | Form a Chemical Bond | Easy | Database |
| 149 | Friday Purchase III | Medium | Database |
| 150 | Friday Purchases I | Medium | Database |
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