Practice problems across 75+ categories
Practice problems frequently asked at Database • 324 problems | 120 Easy | 135 Medium | 61 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 286 | The Number of Rich Customers | Easy | Database |
| 287 | The Number of Seniors and Juniors to Join the Company | Hard | Database |
| 288 | The Number of Seniors and Juniors to Join the Company II | Hard | Database |
| 289 | The Number of Users That Are Eligible for Discount | Easy | Database |
| 290 | The Users That Are Eligible for Discount | Easy | Database |
| 291 | The Winner University | Easy | Database |
| 292 | Top Percentile Fraud | Medium | Database |
| 293 | Top Three Wineries | Hard | Database |
| 294 | Top Travellers | Easy | Database |
| 295 | Total Sales Amount by Year | Hard | Database |
| 296 | Total Traveled Distance | Easy | Database |
| 297 | Tournament Winners | Hard | Database |
| 298 | Tree Node | Medium | Database |
| 299 | Triangle Judgement | Easy | Database |
| 300 | Trips and Users | Hard | Database |
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