done 7lab

2026-09-24 08:00:16 +00:00 · 2023-12-15 22:05:50 +03:00
parent 3125047b7a
commit 2360cb388f
4 changed files with 285 additions and 84 deletions
@@ -0,0 +1,99 @@
+DROP TABLE people_log IF EXISTS;
+DROP TABLE people IF EXISTS;
+
+
+--1--
+CREATE TABLE people (
+    id SERIAL PRIMARY KEY,
+    first_name VARCHAR(64),
+    last_name VARCHAR(64),
+    birthday DATE,
+    amount NUMERIC(10,2)
+);
+
+CREATE TABLE people_log (
+    person_id INTEGER REFERENCES people(id),
+    operation_date TIMESTAMP,
+    sum NUMERIC(10,2)
+);
+
+INSERT INTO people (first_name, last_name, birthday, amount) 
+VALUES ('Andrey', 'Ad', '2004-03-09', 1000.00),
+       ('Sanal', 'Bat', '2004-12-15', 2000.00),
+       ('Alex', 'Yak', '2004-08-10', 3000.00),
+       ('Dima', 'Klev', '2004-04-25', 4000.00),
+       ('David', 'Dav', '2001-11-30', 5000.00),
+	   ('Reno', 'G', '2004-08-28', 6000.00),
+       ('Ilya', 'Zim', '2005-01-06', 7000.00),
+       ('Sema', 'Akh', '2005-12-01', 8000.00);
+	   
+
+INSERT INTO people_log ( person_id, operation_date, sum) 
+VALUES
+(1, '2022-01-05 17:15:00', 100.00),
+(2, '2022-01-06 17:30:00', 300.00),
+(3, '2022-01-07 17:45:00', 300.00),
+(4, '2022-01-08 18:00:00', 400.00),
+(5, '2022-01-09 18:15:00', 500.00),
+(6, '2022-01-10 17:15:00', -100.00),
+(7, '2022-01-12 17:15:00', -400.00),
+(8, '2022-01-29 17:15:00', -200.00);
+
+
+
+SELECT * FROM people;
+SELECT * FROM people_log; 
+
+
+--2--
+
+CREATE OR REPLACE PROCEDURE statement_of_acount(start_date DATE, end_date DATE) AS $$ 
+DECLARE 
+    pos_sum RECORD;
+    neg_sum RECORD;
+    total_count INTEGER;
+    avg_amount NUMERIC;
+BEGIN 
+    FOR pos_sum IN (
+        SELECT operation_date, sum
+        FROM people_log
+        WHERE operation_date BETWEEN start_date AND end_date AND sum > 0
+        ORDER BY sum DESC
+        LIMIT 3
+    ) LOOP
+        RAISE INFO 'Положительная операция: %, Сумма: %', pos_sum.operation_date, pos_sum.sum;
+    END LOOP;
+
+    FOR neg_sum IN (
+        SELECT operation_date, sum
+        FROM people_log
+        WHERE operation_date BETWEEN start_date AND end_date AND sum < 0
+        ORDER BY sum ASC
+        LIMIT 3
+    ) LOOP
+        RAISE INFO 'Отрицательная операция: %, Сумма: %', neg_sum.operation_date, neg_sum.sum;
+    END LOOP;
+
+    SELECT COUNT(*) INTO total_count
+    FROM people_log
+    WHERE operation_date BETWEEN start_date AND end_date;
+
+    SELECT AVG(sum) INTO avg_amount
+    FROM people_log
+    WHERE operation_date BETWEEN start_date AND end_date;
+
+    RAISE INFO 'Общее количество операций: %', total_count;
+    RAISE INFO 'Средняя сумма операций: %', avg_amount;
+
+END $$ LANGUAGE plpgsql; 
+CALL statement_of_acount('2022-01-01', '2022-11-12');
+
+--3--
+CREATE OR REPLACE PROCEDURE account_operation(new_id integer, summa numeric) AS $$ 
+DECLARE
+BEGIN 
+    UPDATE people SET amount = amount + summa WHERE id = new_id;
+    INSERT INTO people_log (person_id, operation_date, sum) VALUES (new_id, CURRENT_TIMESTAMP(0), summa);
+END $$ LANGUAGE plpgsql; 
+
+CALL account_operation(1, 100);