📚 LeetCode SQL Solutions in PostgreSQL

A collection of LeetCode solutions in SQL using PostgreSQL. Includes:

• Easy/Medium/Hard solutions
• Optimized queries

🔹 Features:

• Clean, formatted SQL code
• Use of PostgreSQL-specific functions
• Parsing complex queries
• Regular updates

Useful for preparing for technical interviews and improving your SQL skills.

Style guide for contributors:

1. Add description to all tasks from Leetcode.
2. Name file pattern: xxx.Task name.sql
3. All keywords must be uppercase.
4. For every task create new branch with pattern: task/task-name -> make PR to main.

Have a good contributing!

1. Easy
   • 175. Combine Two Tables
   • 181. Employees Earning More Than Their Managers
   • 182. Duplicate Emails
   • 183. Customers Who Never Order
   • 511. Game Play Analysis 1
   • 577. Employee Bonus
   • 586. Customer Placing the Largest Number of Orders
   • 595. Big Countries
   • 596. Classes With at Least 5 Students
   • 607. Sales Person
   • 610. Triangle Judgement
   • 619. Biggest Single Number
   • 620. Not Boring Movies
   • 1068. Product Sales Analysis I
   • 1407. Top Travellers
   • 1484. Group Sold Products By The Date
   • 1729. Find Followers Count
2. Medium
   • 176. Second Highest Salary
   • 184. Department Highest Salary
   • 1045. Customers Who Bought All Products
   • 1070. Product Sales Analysis III
   • 1158. Market Analysis 1

Check out LICENSE page.