added lab4

Lab/Lab#3/lab3.sql

@@ -0,0 +1,63 @@
+/* Лабораторная работа №3 | Вариант 4 | Антипенко, Дробышевский */
+
+SELECT * FROM departments;
+SELECT * FROM employees;
+SELECT * FROM jobs;
+
+/* Задание 1 */
+SELECT 
+	e.first_name AS "FIRST_NAME",
+	e.last_name AS "LAST_NAME", 
+	d.department_name AS "DEPARTMENT_NAME"
+FROM employees e, departments d
+WHERE e.department_id = d.department_id AND d.department_name IN ('IT', 'Sales');
+
+/* Задание 2 */
+SELECT 
+	e.first_name AS "FIRST_NAME",
+	e.last_name AS "LAST_NAME", 
+	trunc(e.salary) AS "SALARY",
+	d.department_name AS "DEPARTMENT_NAME",
+	j.job_title AS "JOB_TITLE"
+FROM employees e, jobs j, departments d
+WHERE e.department_id = d.department_id AND e.job_id = j.job_id
+AND e.salary > 10000
+ORDER BY e.salary ASC;
+
+/* Задание 3 */
+SELECT
+	e.first_name AS "Имя",
+	e.last_name AS "Фамилия", 
+	to_char(e.salary, '99999D99') AS "Оклад",
+	trunc(j.min_salary) AS "Мин.оклад"
+FROM employees e, jobs j
+WHERE e.job_id = j.job_id AND j.min_salary*1.2 >= e.salary;
+
+/* Задание 4 */
+SELECT
+	last_name AS "Фамилия_Р",
+	first_name AS "Имя",
+	to_char(salary, '99999D99') AS "Оклад"
+FROM employees
+WHERE salary > (
+	SELECT
+		AVG(salary)
+	FROM employees
+)
+ORDER BY salary ASC;
+
+/* Задание 5 */
+SELECT 
+	e.first_name AS "Имя",
+    e.last_name AS "Фамилия",
+    e.job_id AS "Должность",
+	to_char(e.salary, '999999D99') AS "Оклад"
+FROM employees e
+/*WHERE e.job_id = j.job_id AND e.salary = j.max_salary*/
+WHERE e.salary, e.job_id IN (
+	SELECT 
+		max_salary,
+		job_id
+	FROM jobs
+);
+