Julia conducted a 15 days of learning SQL contest. The start date of the contest was *March 01, 2016* and the end date was *March 15, 2016*. Write a query to print total number of unique hackers who ...
-- Write a SQL query to select all employees whose salaries are greater than $50,000 and are working in the 'Sales' or 'Marketing' department, using the appropriate comparison and logical operators. - ...