Questions
Status
Every employee with their departmentEasySQLSQLEasy8 minHeadcount per departmentEasySQLSQLEasy8 minOrders per statusEasySQLSQLEasy7 minThe highest and lowest salary on recordEasySQLSQLEasy7 minWho has no salary recordedEasySQLSQLEasy8 minOrders with the customer countryEasySQLSQLEasy8 minHow many of each eventEasySQLSQLEasy7 minMonthly revenue from live subscriptionsEasySQLSQLEasy8 minPosts with their authorEasySQLSQLEasy8 minAuthors with no country on fileEasySQLSQLEasy8 minHow many students per courseEasySQLSQLEasy8 min