LeetCode OJ_Database 简单题和中等题

今天下午,想重新温习下SQL,就刷了下LeetCode上有关Database的简单题和中等题。

  • 简单题

1. Employees Earning More Than Their Managers

2. Duplicate Emails

3. Combine Two Tables

4. Customers Who Never Order

5. Rising Temperature

6. Second Highest Salary

 

7. Delete Duplicate Emails

  • 中等题

8. Consecutive Numbers

9. Rank Scores

10. Department Highest Salary

11. Nth Highest Salary