A collection of LeetCode questions to solve database problems. LeetCode Topics Database 0175-combine-two-tables 0197-rising-temperature 0570-managers-with-at-least-5-direct-reports 0577-employee-bonus 0584-find-customer-referee 0595-big-countries 0620-not-boring-movies 1068-product-sales-analysis-i 1075-project-employees-i 1148-article-views-i 1211-queries-quality-and-percentage 1251-average-selling-price 1280-students-and-examinations 1378-replace-employee-id-with-the-unique-identifier 1581-customer-who-visited-but-did-not-make-any-transactions 1633-percentage-of-users-attended-a-contest 1661-average-time-of-process-per-machine 1683-invalid-tweets 1757-recyclable-and-low-fat-products 1934-confirmation-rate