To group the employees by their length of service: less […]

List the number of female employees and their average a […]

Compute the increase in sales of the first month of a q […]

Find out the longest run of consecutive days of gains i […]

Find out the three trading days with the highest stock […]

Find out the customers who account for half of the tota […]

Divide the students into two classes according to their […]

Find out the employee whose age is the median of the ag […]

Find out the interval (days) between the joining date o […]

Find out the average age of female employees (including […]