【单选题】Examine the structures of the EMPLOYEES and TAX tables. You need to find the percentage tax applicable for each employee. Which SQL statement would you use?()
A.
SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary BETWEEN t.min_salary AND t.max_salary;
B.
SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary > t.min_salary, tax_percent
C.
SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE MIN(e.salary) = t.min_salary AND MAX(e.salary) = t.max_salary
D.
You cannot find the information because there is no common column between the two tables.
【简答题】Homework 1 - Conference Correspondence (5%) (due 13:30, 17 December, 2018) Directions: Find some academic conferences that are relevant to your discipline. These conferences will be held in the upcomi...
【简答题】Find some academic conferences that are relevant to your discipline. These conferences will be held in the upcoming months in 2019 or 2020. Select one of them to your interest and then email the conta...