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43 lines
1.3 KiB
SQL
43 lines
1.3 KiB
SQL
/* Лабораторная работа #2 || Вариант 2 || Антипенко, Дробышевский */
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/* Задание 1 */
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SELECT
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(first_name || ' ' || last_name) AS "ФИО",
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salary AS "ОКЛАД",
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trunc(salary*0.87) AS "Оклад минус подоходный"
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FROM employees;
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/* Задание 2 */
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SELECT
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first_name AS "Имя",
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last_name AS "Фамилия",
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job_id AS "Должность",
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hire_date AS "Дата приема на работу"
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FROM employees
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WHERE job_id IN ('AD_PRES', 'AD_VP', 'AD_ASST')
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AND hire_date BETWEEN SYMMETRIC
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'1995-01-01' AND '2023-01-01'
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LIMIT 5;
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/* Задание 3 */
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SELECT
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first_name AS "Имя",
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last_name AS "Фамилия",
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job_id AS "Должность",
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to_char(hire_date, 'DD.MM.YYYY') AS "Дата приема на работу",
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EXTRACT(month from now()) + EXTRACT(year from now())*12
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- EXTRACT(month from hire_date) - EXTRACT(year from hire_date)*12
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as "Проработано месяцев"
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FROM employees;
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/* Задание 4 */
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SELECT
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job_id AS "Должность",
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trunc(MAX(salary)) AS "Максимальная зарплата",
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trunc(MIN(salary)) AS "Минимальная зарплата",
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trunc(AVG(salary), 2) AS "Средняя зарплата"
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FROM employees
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GROUP BY job_id; |