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.gitattributes
.gitattributes
 
 
1045-customers-who-bought-all-products.sql
1045-customers-who-bought-all-products.sql
 
 
1068-product-sales-analysis-i.sql
1068-product-sales-analysis-i.sql
 
 
1070-product-sales-analysis-iii.sql
1070-product-sales-analysis-iii.sql
 
 
1075-project-employees-i.sql
1075-project-employees-i.sql
 
 
1141-user-activity-for-the-past-30-days-i.sql
1141-user-activity-for-the-past-30-days-i.sql
 
 
1148-article-views-i.sql
1148-article-views-i.sql
 
 
1164-product-price-at-a-given-date.sql
1164-product-price-at-a-given-date.sql
 
 
1211-queries-quality-and-percentage.sql
1211-queries-quality-and-percentage.sql
 
 
1251-average-selling-price-2nd.sql
1251-average-selling-price-2nd.sql
 
 
1251-average-selling-price.sql
1251-average-selling-price.sql
 
 
1280-students-and-examinations.sql
1280-students-and-examinations.sql
 
 
1327-list-the-products-ordered-in-a-period.sql
1327-list-the-products-ordered-in-a-period.sql
 
 
1341-movie-rating.sql
1341-movie-rating.sql
 
 
1378-replace-employee-id-with-the-unique-identifier.sql
1378-replace-employee-id-with-the-unique-identifier.sql
 
 
1484-group-sold-products-by-the-date.sql
1484-group-sold-products-by-the-date.sql
 
 
1517-find-users-with-valid-e-mails.sql
1517-find-users-with-valid-e-mails.sql
 
 
1527-patients-with-a-condition.sql
1527-patients-with-a-condition.sql
 
 
1581-customer-who-visited-but-did-not-make-any-transactions.sql
1581-customer-who-visited-but-did-not-make-any-transactions.sql
 
 
1633-percentage-of-users-attended-a-contest.sql
1633-percentage-of-users-attended-a-contest.sql
 
 
1661-average-time-of-process-per-machine.sql
1661-average-time-of-process-per-machine.sql
 
 
1667-fix-names-in-a-table.sql
1667-fix-names-in-a-table.sql
 
 
1683-invalid-tweets.sql
1683-invalid-tweets.sql
 
 
1729-find-followers-count.sql
1729-find-followers-count.sql
 
 
1731-the-number-of-employees-which-report-to-each-employee.sql
1731-the-number-of-employees-which-report-to-each-employee.sql
 
 
175-combine-two-tables.sql
175-combine-two-tables.sql
 
 
1757-recyclable-and-low-fat-products.sql
1757-recyclable-and-low-fat-products.sql
 
 
1789-primary-department-for-each-employee.sql
1789-primary-department-for-each-employee.sql
 
 
180-consecutive-numbers.sql
180-consecutive-numbers.sql
 
 
1907-count-salary-categories.sql
1907-count-salary-categories.sql
 
 
1934-confirmation-rate.sql
1934-confirmation-rate.sql
 
 
196-delete-duplicate-emails.sql
196-delete-duplicate-emails.sql
 
 
197-rising-temperature.sql
197-rising-temperature.sql
 
 
1978-employees-whose-manager-left-the-company.sql
1978-employees-whose-manager-left-the-company.sql
 
 
550-game-play-analysis-iv.sql
550-game-play-analysis-iv.sql
 
 
570-managers-with-at-least-5-direct-reports.sql
570-managers-with-at-least-5-direct-reports.sql
 
 
577-employee-bonus.sql
577-employee-bonus.sql
 
 
584-find-customer-referee.sql
584-find-customer-referee.sql
 
 
585-investments-in-2016.sql
585-investments-in-2016.sql
 
 
595-big-countries.sql
595-big-countries.sql
 
 
596-classes-with-at-least-5-students.sql
596-classes-with-at-least-5-students.sql
 
 
602-friend-requests-ii-who-has-the-most-friends.sql
602-friend-requests-ii-who-has-the-most-friends.sql
 
 
610-triangle-judgement.sql
610-triangle-judgement.sql
 
 
619-biggest-single-number.sql
619-biggest-single-number.sql
 
 
620-not-boring-movies.sql
620-not-boring-movies.sql
 
 
626-exchange-seats.sql
626-exchange-seats.sql
 
 
README.md
README.md
 
 
dp_leetcode_sql_50_problems_to_review.txt
dp_leetcode_sql_50_problems_to_review.txt
 
 

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LeetCode SQL 50

This repository contains my daily solutions to the LeetCode Top 50 SQL Questions.

Purpose

  • Practice SQL by solving real-world problems on LeetCode.
  • Build and maintain a consistent daily habit of coding.
  • Track progress and revision history using Git.

📁 Structure

Each problem is saved as a .sql file with the following format: problem-id_short-title.sql

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SQL solutions for LeetCode's "SQL 50" Study Plan problems

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