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https://github.com/ada-dmitry/DB.mephi_ada.git
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99 lines
2.8 KiB
PL/PgSQL
99 lines
2.8 KiB
PL/PgSQL
DROP TABLE people_log IF EXISTS;
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DROP TABLE people IF EXISTS;
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--1--
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CREATE TABLE people (
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id SERIAL PRIMARY KEY,
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first_name VARCHAR(64),
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last_name VARCHAR(64),
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birthday DATE,
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amount NUMERIC(10,2)
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);
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CREATE TABLE people_log (
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person_id INTEGER REFERENCES people(id),
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operation_date TIMESTAMP,
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sum NUMERIC(10,2)
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);
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INSERT INTO people (first_name, last_name, birthday, amount)
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VALUES ('Andrey', 'Ad', '2004-03-09', 1000.00),
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('Sanal', 'Bat', '2004-12-15', 2000.00),
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('Alex', 'Yak', '2004-08-10', 3000.00),
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('Dima', 'Klev', '2004-04-25', 4000.00),
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('David', 'Dav', '2001-11-30', 5000.00),
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('Reno', 'G', '2004-08-28', 6000.00),
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('Ilya', 'Zim', '2005-01-06', 7000.00),
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('Sema', 'Akh', '2005-12-01', 8000.00);
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INSERT INTO people_log ( person_id, operation_date, sum)
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VALUES
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(1, '2022-01-05 17:15:00', 100.00),
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(2, '2022-01-06 17:30:00', 300.00),
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(3, '2022-01-07 17:45:00', 300.00),
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(4, '2022-01-08 18:00:00', 400.00),
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(5, '2022-01-09 18:15:00', 500.00),
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(6, '2022-01-10 17:15:00', -100.00),
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(7, '2022-01-12 17:15:00', -400.00),
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(8, '2022-01-29 17:15:00', -200.00);
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SELECT * FROM people;
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SELECT * FROM people_log;
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--2--
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CREATE OR REPLACE PROCEDURE statement_of_acount(start_date DATE, end_date DATE) AS $$
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DECLARE
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pos_sum RECORD;
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neg_sum RECORD;
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total_count INTEGER;
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avg_amount NUMERIC;
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BEGIN
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FOR pos_sum IN (
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SELECT operation_date, sum
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FROM people_log
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WHERE operation_date BETWEEN start_date AND end_date AND sum > 0
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ORDER BY sum DESC
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LIMIT 3
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) LOOP
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RAISE INFO 'Положительная операция: %, Сумма: %', pos_sum.operation_date, pos_sum.sum;
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END LOOP;
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FOR neg_sum IN (
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SELECT operation_date, sum
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FROM people_log
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WHERE operation_date BETWEEN start_date AND end_date AND sum < 0
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ORDER BY sum ASC
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LIMIT 3
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) LOOP
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RAISE INFO 'Отрицательная операция: %, Сумма: %', neg_sum.operation_date, neg_sum.sum;
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END LOOP;
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SELECT COUNT(*) INTO total_count
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FROM people_log
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WHERE operation_date BETWEEN start_date AND end_date;
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SELECT AVG(sum) INTO avg_amount
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FROM people_log
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WHERE operation_date BETWEEN start_date AND end_date;
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RAISE INFO 'Общее количество операций: %', total_count;
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RAISE INFO 'Средняя сумма операций: %', avg_amount;
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END $$ LANGUAGE plpgsql;
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CALL statement_of_acount('2022-01-01', '2022-11-12');
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--3--
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CREATE OR REPLACE PROCEDURE account_operation(new_id integer, summa numeric) AS $$
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DECLARE
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BEGIN
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UPDATE people SET amount = amount + summa WHERE id = new_id;
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INSERT INTO people_log (person_id, operation_date, sum) VALUES (new_id, CURRENT_TIMESTAMP(0), summa);
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END $$ LANGUAGE plpgsql;
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CALL account_operation(1, 100); |