SQL Interview Prep Problems
Practice SQL coding interview questions on uByte. 114 problems across 16 categories — arrays, strings, dynamic programming, trees, graphs, and more — with instant test feedback.
Problem Categories
Problems
- Two Sum — easy
- Contains Duplicate — easy
- Best Time to Buy and Sell Stock — easy
- Missing Number — easy
- Single Number — easy
- Majority Element — easy
- Plus One — easy
- Max Consecutive Ones — easy
- Remove Duplicates from Sorted Array — easy
- Find All Duplicates in an Array — easy
- Second Largest in Array — easy
- Pascal's Triangle — easy
- Find All Numbers Disappeared in an Array — easy
- Summary Ranges — easy
- Three Sum — medium
- Maximum Subarray — medium
- Product of Array Except Self — medium
- Spiral Matrix — medium
- Rotate Image — medium
- Next Permutation — medium
- Rotate Array — medium
- Spiral Matrix II — medium
- Count Good Triplets — medium
- Trapping Rain Water — hard
- Letter Combinations of a Phone Number — medium
- Generate Parentheses — medium
- Subsets — medium
- Combination Sum II — medium
- N-Queens II — hard
- Word Search II — hard
- Integer Square Root — easy
- Valid Perfect Square — easy
- First Bad Version — easy
- Find Minimum in Rotated Sorted Array — medium
- Search in Rotated Sorted Array — medium
- Find Peak Element — medium
- Find First and Last Position in Sorted Array — medium
- Median of Two Sorted Arrays — hard
- LRU Cache — hard
- Climbing Stairs — easy
- Fibonacci Number — easy
- House Robber — medium
- Coin Change — medium
- Maximum Product Subarray — medium
- Unique Paths — medium
- Decode Ways — medium
- Longest Increasing Subsequence — medium
- Minimum Path Sum — medium
- Partition Equal Subset Sum — medium
- Unique Paths II — medium
- ...and 64 more problems