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Topic: Database

86 problems
TitleStatusDifficulty
Combine Two TablesreadEasy
Second Highest SalaryreadMedium
Nth Highest SalaryreadMedium
Rank ScoresreadMedium
Consecutive NumbersreadMedium
Employees Earning More Than Their ManagersreadEasy
Duplicate EmailsreadEasy
Customers Who Never OrderreadEasy
Department Highest SalaryreadMedium
Department Top Three SalariesreadHard
Delete Duplicate EmailsreadEasy
Rising TemperaturereadEasy
Trips and UsersreadHard
Game Play Analysis IreadEasy
Game Play Analysis IVreadMedium
Managers with at Least 5 Direct ReportsreadMedium
Employee BonusreadEasy
Find Customer RefereereadEasy
Investments in 2016readMedium
Customer Placing the Largest Number of OrdersreadEasy
Big CountriesreadEasy
Classes More Than 5 StudentsreadEasy
Human Traffic of StadiumreadHard
Friend Requests II: Who Has the Most FriendsreadMedium
Sales PersonreadEasy
Tree NodereadMedium
Triangle JudgementreadEasy
Biggest Single NumberreadEasy
Not Boring MoviesreadEasy
Exchange SeatsreadMedium
Swap SalaryreadEasy
Customers Who Bought All ProductsreadMedium
Actors and Directors Who Cooperated At Least Three TimesreadEasy
Product Sales Analysis IreadEasy
Product Sales Analysis IIIreadMedium
Project Employees IreadEasy
Sales Analysis IIIreadEasy
User Activity for the Past 30 Days IreadEasy
Article Views IreadEasy
Market Analysis IreadMedium
Product Price at a Given DatereadMedium
Immediate Food Delivery IIreadMedium
Reformat Department TablereadEasy
Monthly Transactions IreadMedium
Last Person to Fit in the BusreadMedium
Queries Quality and PercentagereadEasy
Average Selling PricereadEasy
Students and ExaminationsreadEasy
Restaurant GrowthreadMedium
List the Products Ordered in a PeriodreadEasy
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