All Posts

Average Time Of Process Per Machine Problem

LeetCode 1661. There is a factory website that has several...

Second Highest Salary Problem

LeetCode 176. Given the Employee table, write a SQL query...

Employees Earning More Than Their Managers Problem

LeetCode 181. Given the Employee table, write a SQL query...

Bank Account Summary II Problem

LeetCode 1587. Write an SQL query to report the name...

Group Sold Products By The Date Problem

LeetCode 1484. Write an SQL query to find for each...

All Valid Triplets That Can Represent A Country Problem

LeetCode 1623. Write an SQL query to find all the...

Warehouse Manager Problem

LeetCode 1571. Write an SQL query to report how much...

Students With Invalid Departments Problem

LeetCode 1350. Write an SQL query to find the id...


Replace Employee ID With The Unique Identifier Problem

LeetCode 1378. Write an SQL query to show the unique...

Patients With A Condition Problem

LeetCode 1527. Write an SQL query to report the patient_id,...

Invalid Tweets Problem

LeetCode 1683. Write an SQL query to find the IDs...

Find The Team Size Problem

LeetCode 1303. Write an SQL query to find the team...

Combine Two Tables Problem

LeetCode 175. Write a SQL query for a report that...

LeetCode Database Solution List

A list of LeetCode database problems and solutions.

LeetCode Solution List

A growing list of LeetCode problems and solutions.

Maximum Equal Frequency Problem

LeetCode 1224. Given an array nums of positive integers, return...