 CREATE TABLE player(
  id SERIAL PRIMARY KEY,
  name VARCHAR(50),
  surname VARCHAR(50),
  birthday DATE, 
  height INTEGER CHECK(height > 150 AND height < 210),
  weight INTEGER,
  city_id INTEGER,
  phone_number TEXT[]
  );
CREATE TABLE characteristic(
  game_position VARCHAR(50) 
    CHECK(LOWER(game_position) ='вратарь' 
    OR LOWER(game_position) ='защитник'
    OR LOWER(game_position) ='полузащитник'
    OR LOWER(game_position) ='нападающий'
    OR LOWER(game_position) ='капитан'),
  number INTEGER PRIMARY KEY REFERENCES player(id),
  foot_size INTEGER,
  leading_hand VARCHAR(30) 
    CHECK(LOWER(leading_hand) ='правый' OR LOWER(leading_hand) ='левый')
  );
CREATE TABLE place_work(
  player_id INTEGER PRIMARY KEY REFERENCES player(id),
  salary INTEGER,
  prize INTEGER,
  penalty INTEGER,
  stadium_id INTEGER
  );
CREATE TABLE city(
  id SERIAL PRIMARY KEY,
  name VARCHAR(255)
  );
CREATE TABLE stadium(
  id SERIAL PRIMARY KEY,
  name VARCHAR(255),
  city_id INTEGER REFERENCES city(id),
  capacity INTEGER CHECK(capacity>0)
  );
CREATE TABLE sсhedule(
  player_id INTEGER UNIQUE REFERENCES player(id),
  plan text[][7]
  );
INSERT INTO player(name, surname, birthday, height, weight, city_id, phone_number) 
  VALUES ('Никита','Сизых','2003-08-11',175,72,1,ARRAY['+79433640944','236543']), 
  ('Алексей','Суперкин','2003-04-19',185,90,1,ARRAY['+79846039400','463474']),
  ('Кирилл','Коклюшев','2003-10-29',169,80,2,ARRAY['+79290373430']),
  ('Егор','Харитонов','2000-11-29',173,70,5,ARRAY['+79327822155']),
  ('Сергей','Мазякин','2001-03-14',177,66,4,ARRAY['+79243769778']),
  ('Василий','Пупковина','2002-09-11',170,69,2,ARRAY['+79638124014']),
  ('Архип','Ахрипов','2004-01-12',171,64,2,ARRAY['+79290326759']),
  ('Илья','Молодухин','2004-11-21',173,71,8,ARRAY['+79222226050']),
  ('Александр','Попов','2001-05-25',179,75,1,ARRAY['+79622543514']),
  ('Игорь','Нездесюлин','2002-10-17',170,70,2,ARRAY['+79505287891']),
  ('Август','Колхозкин','2003-12-31',165,65,11,ARRAY['+79341873984','124675']);
SELECT * FROM player;
SELECT phone_number[1] FROM player;
INSERT INTO characteristic(number, game_position, foot_size, leading_hand) 
  VALUES (1,'Защитник',42,'Правый'),
  (2,'Полузащитник',40,'Правый'),
  (3,'Защитник',44,'Левый'),
  (4,'Полузащитник',43,'Правый'),
  (5,'Вратарь',43,'Левый'),
  (6,'Нападающий',41,'Правый'),
  (7,'Нападающий',44,'Правый'),
  (8,'Нападающий',45,'Левый'),
  (9,'Вратарь',43,'Правый'),
  (10,'Нападающий',41,'Правый'),
  (11,'Капитан',44,'Правый');
SELECT * FROM characteristic;
INSERT INTO city(name)
  VALUES ('Новосибирск'), ('Москва'), ('Казань'), 
  ('Нижний Новгород'), ('Санкт-Петербург'),
  ('Уфа'),('Ярославль'),('Челябинск'),
  ('Омск'),('Тольятти'),('Магнитогорск');
SELECT * FROM city;

INSERT INTO stadium(name, city_id, capacity) 
  VALUES ('Сибирь-арена',1,6055), ('Уфа-арена',6,8070), 
  ('Арена-Омск',9 ,10318), ('G-Drive-Арена',9 ,12000), 
  ('Нагорный',4 ,5600), ('ЦСКА-Арена',2 ,12100), 
  ('Лужники',2 ,8700), ('Сокольники',2 ,5530), 
  ('Арена-Металлург',11 ,7700), ('СК Юбилейный',5 ,7012), 
  ('Арена-Трактор',8,7500);
SELECT *FROM stadium;

INSERT INTO place_work(player_id, stadium_id, salary, prize, penalty)
  VALUES (1,1,10000,5000,2000), (2,1,20000,1000,4500), (3,6,23500,4000,1500),
(4,10,33000,3000,1000), (5,5,21000,5000,4000), (6,7,51000,10000,2500),
(7,7,42000,1000,3500), (8,11,22000,1500,1500), (9,1,15000,5000,500),
(10,7,35000,3000,900), (11,9,85000,500,5000);
SELECT *FROM place_work;

INSERT INTO sсhedule(player_id, plan) 
  VALUES (1, ARRAY[['Отдых','Тренировка','Качалка','Процедуры','','',''],['Отдых','','','','','','']]),
  (2, ARRAY[['Игра','','','','','',''],['Отдых','','','','','','']]),
  (3, ARRAY[['Игра','','','','','',''],['Отдых','','','','','','']]),
  (4, ARRAY[['Игра','','Выступление','','','',''],['Отдых','','','','','','']]),
  (5, ARRAY[['Игра','','','','','',''],['Отдых','','','','','','']]),
  (6, ARRAY[['Игра','','','','','',''],['Отдых','','','','','','']]),
  (7, ARRAY[['Игра','','','','','',''],['Отдых','','','','','','']]);
SELECT name, plan[1][1] FROM sсhedule s
  RIGHT JOIN player p ON p.id=s.player_id;
  
SELECT MAX(height), count(*) FROM player p
  INNER JOIN characteristic ch ON ch.number=p.id
  WHERE LOWER(game_position) = 'нападающий';
  
SELECT MIN(weight), count(*) FROM player p
  INNER JOIN characteristic ch ON ch.number=p.id
  WHERE LOWER(game_position) = 'защитник' AND LOWER(leading_hand)='правый';
  
SELECT AVG(prize), count(*) FROM player p
  INNER JOIN city c ON p.city_id = c.id
  INNER JOIN place_work pw ON p.id = pw.player_id
  WHERE c.name = 'Москва';
SELECT count(*) FROM characteristic
  WHERE LOWER(leading_hand) ='левый' 
    AND LOWER(game_position)='нападающий';
SELECT SUM(salary), count(*) FROM player p
  INNER JOIN city c ON p.city_id = c.id
  INNER JOIN place_work pw ON p.id = pw.player_id
  INNER JOIN characteristic ch ON ch.number=p.id
  WHERE c.name = 'Санкт-Петербург' AND LOWER(ch.game_position) ='полузащитник';

created 1 year ago

PostgreSQL online editor

Write, Run & Share PostgreSQL queries online using OneCompiler's PostgreSQL online editor and compiler for free. It's one of the robust, feature-rich online editor and compiler for PostgreSQL. Getting started with the OneCompiler's PostgreSQL editor is really simple and pretty fast. The editor shows sample boilerplate code when you choose database as 'PostgreSQL' and start writing queries to learn and test online without worrying about tedious process of installation.

About PostgreSQL

PostgreSQL is a open source relational database system and is also knows as Postgres.

Key Features:

Postgres is not only free and open-source but also it is highly extensible.
Custom Data types and funtions from various programming languaues can be introduced and the good part is compiling entire database is not required.
ACID(Atomicity, Consistency, Isolation, Durability) compliant.
First DBMS which implemented Multi-version concurrency control (MVCC) feature.
It's the default database server for MacOS.
It supports all major operating systems like Linux, Windows, OpenBSD,FreeBSD etc.

Syntax help

1. CREATE

CREATE command is used to create a table, schema or an index.

Syntax:

         CREATE TABLE table_name (
                column1 datatype,
                column2 datatype,
                ....);

2. ALTER

ALTER command is used to add, modify or delete columns or constraints from the database table.

Syntax

ALTER TABLE Table_name ADD column_name datatype;

3. TRUNCATE:

TRUNCATE command is used to delete the data present in the table but this will not delete the table.

Syntax

TRUNCATE table table_name;

4. DROP

DROP command is used to delete the table along with its data.

Syntax

DROP TABLE table_name;

5. RENAME

RENAME command is used to rename the table name.

Syntax

ALTER TABLE table_name1 RENAME to new_table_name1;

6. INSERT

INSERT Statement is used to insert new records into the database table.

Syntax

INSERT INTO table_name (column1, column2, column3, ...) VALUES (value1, value2, value3, ...);

7. SELECT

Select statement is used to select data from database tables.

Syntax:

SELECT column1, column2, ...
FROM table_name;

8. UPDATE

UPDATE statement is used to modify the existing values of records present in the database table.

Syntax

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;

9. DELETE

DELETE statement is used to delete the existing records present in the database table.

Syntax

DELETE FROM table_name where condition;