My solutions to leetcode SQL Study Plan.
Day 1:
2. Recyclable and Low Fat Products
3. Find Customer Referee
4. Customers Who Never Order
Day 2:
2. Swap Salary
3. Delete Duplicate Emails
Day 3:
2. Group Sold Products By The Date
3. Patients With a Condition
Day 4:
2. Rearrange Products Table
3. Tree Node
4. Second Highest Salary
Day 5:
2. Customer Who Visited but Did Not Make Any Transactions
3. Article Views I
Day 6:
2. Sales Person
Day 7:
2. Daily Leads and Partners
3. Find Followers Count
Day 8:
2. Game Play Analysis I
3. The Latest Login in 2020
4. Find Total Time Spent by Each Employee
Day 9:
2. Top Travellers
3. Market Analysis I
Day 10:
2. Actors and Directors Who Cooperated At Least Three Times
3. Bank Account Summary II
4. Sales Analysis III