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This SQL Lab serves as a technical archive focused on solving complex business logic through advanced SQL queries and to master SQL concepts by tackling LeetCode challenges and translating them into real-world data scenarios. The lab features hands-on, optimized solutions that strengthen analytical thinking and practical problem-solving

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1045. Customers Who Bought All Products.txt
1045. Customers Who Bought All Products.txt
 
 
1050. Actors and Directors Who Cooperated At Least Three Times.txt
1050. Actors and Directors Who Cooperated At Least Three Times.txt
 
 
1070. Product Sales Analysis III.txt
1070. Product Sales Analysis III.txt
 
 
1075. Project Employees I.txt
1075. Project Employees I.txt
 
 
1084. Sales Analysis III.txt
1084. Sales Analysis III.txt
 
 
1141. User Activity for the Past 30 Days I.txt
1141. User Activity for the Past 30 Days I.txt
 
 
1158. Market Analysis I.txt
1158. Market Analysis I.txt
 
 
1164. Product Price at a Given Date.txt
1164. Product Price at a Given Date.txt
 
 
1174. Immediate Food Delivery II.txt
1174. Immediate Food Delivery II.txt
 
 
1179. Reformat Department Table.txt
1179. Reformat Department Table.txt
 
 
1193. Monthly Transactions I.txt
1193. Monthly Transactions I.txt
 
 
1204. Last Person to Fit in the Bus.txt
1204. Last Person to Fit in the Bus.txt
 
 
1211. Queries Quality and Percentage.txt
1211. Queries Quality and Percentage.txt
 
 
1251. Average Selling Price.txt
1251. Average Selling Price.txt
 
 
1321. Restaurant Growth.txt
1321. Restaurant Growth.txt
 
 
1327. List the Products Ordered in a Period1.txt
1327. List the Products Ordered in a Period1.txt
 
 
1341. Movie Rating.txt
1341. Movie Rating.txt
 
 
1393. Capital GainLoss.txt
1393. Capital GainLoss.txt
 
 
1407. Top Travellers.txt
1407. Top Travellers.txt
 
 
1484. Group Sold Products By The Date.txt
1484. Group Sold Products By The Date.txt
 
 
1517. Find Users With Valid E-Mails.txt
1517. Find Users With Valid E-Mails.txt
 
 
1527_Patients_With_a_Condition.sql
1527_Patients_With_a_Condition.sql
 
 
1587. Bank Account Summary II.txt
1587. Bank Account Summary II.txt
 
 
1633. Percentage of Users Attended a Contest.txt
1633. Percentage of Users Attended a Contest.txt
 
 
1667. Fix Names in a Table.txt
1667. Fix Names in a Table.txt
 
 
1729. Find Followers Count.txt
1729. Find Followers Count.txt
 
 
1731. The Number of Employees Which Report to Each Employee.txt
1731. The Number of Employees Which Report to Each Employee.txt
 
 
1789. Primary Department for Each Employee.txt
1789. Primary Department for Each Employee.txt
 
 
1795. Rearrange Products Table.txt
1795. Rearrange Products Table.txt
 
 
1873. Calculate Special Bonus.txt
1873. Calculate Special Bonus.txt
 
 
1890. The Latest Login in 2020.txt
1890. The Latest Login in 2020.txt
 
 
1907. Count Salary Categories.txt
1907. Count Salary Categories.txt
 
 
626. Exchange Seats.txt
626. Exchange Seats.txt
 
 
627_Swap_Salar.txt
627_Swap_Salar.txt
 
 

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This SQL Lab serves as a technical archive focused on solving complex business logic through advanced SQL queries and to master SQL concepts by tackling LeetCode challenges and translating them into real-world data scenarios. The lab features hands-on, optimized solutions that strengthen analytical thinking and practical problem-solving

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sql data-engineering leetcode-solutions sql-optimization database-challenges
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