Practice problems across 75+ categories
Practice problems frequently asked at Database • 324 problems | 120 Easy | 135 Medium | 61 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 46 | Combine Two Tables | Easy | Database |
| 47 | Compute the Rank as a Percentage | Medium | Database |
| 48 | Concatenate the Name and the Profession | Easy | Database |
| 49 | Confirmation Rate | Medium | Database |
| 50 | Consecutive Available Seats | Easy | Database |
| 51 | Consecutive Available Seats II | Medium | Database |
| 52 | Consecutive Numbers | Medium | Database |
| 53 | Consecutive Transactions with Increasing Amounts | Hard | Database |
| 54 | Convert Date Format | Easy | Database |
| 55 | Count Apples and Oranges | Medium | Database |
| 56 | Count Artist Occurrences On Spotify Ranking List | Easy | Database |
| 57 | Count Occurrences in Text | Medium | Database |
| 58 | Count Salary Categories | Medium | Database |
| 59 | Count Student Number in Departments | Medium | Database |
| 60 | Count the Number of Experiments | Medium | Database |
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