這個是從別人那邊fork出來的，而這個repo也會記錄自己的解答，與解題思路。 重點是會給予把table跟sample data建起來的sql，這樣可以方便自己在local電腦端，執行各種sql來看結果。
This repo contains all my SQL solutions from Leetcode website in order to practice my SQL programming skills. I attempted all questions in 25 days to corroborate my knowledge in SQL.
The solutions are divided into three level of categories namely Easy, Medium, and Hard. Every category first contains the question and then followed by its respective solution. Link to the website is: https://leetcode.com/problemset/database/