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58 lines
3.3 KiB
58 lines
3.3 KiB
2 years ago
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-- ///////////////////////////////////////Создание таблиц///////////////////////////////////
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CREATE TABLE person (
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id int primary key generated always as identity (start with 1, increment by 1),
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full_name varchar(200) not null,
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birth date
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);
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--DROP TABLE PERSON;
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CREATE TABLE building (
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id int primary key generated always as identity (start with 1, increment by 1),
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address varchar(200) not null,
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date_build date,
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status varchar(50),
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type_buiding varchar(50),
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count_men int,
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check (type_buiding in ('жилое', 'ТЦ', 'БЦ', 'больница')),
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check (status='build' and date_build is null or status='done' and date_build is not null)
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);
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--DROP TABLE BUILDING;
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ALTER TABLE building ADD COLUMN person_id int;
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ALTER TABLE building ADD CONSTRAINT fk_building_person FOREIGN KEY (person_id) REFERENCES person(id)
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-- ////////////////////////////////////////////////////Наполнение таблиц данными//////////////////////////////////////////////////
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INSERT INTO PERSON (FULL_NAME, BIRTH) VALUES ('Andrey Rozkov', '1996-12-05');
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INSERT INTO PERSON (FULL_NAME, BIRTH) VALUES ('Maksim Rozkov', '1989-10-15');
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INSERT INTO PERSON (FULL_NAME, BIRTH) VALUES ('Olga Krot', '1982-02-03');
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INSERT INTO PERSON (FULL_NAME, BIRTH) VALUES ('Natalia Ivanova', '1999-01-23');
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INSERT INTO PERSON (FULL_NAME, BIRTH) VALUES ('Vladimir Zorin', '1996-12-05');
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INSERT INTO PERSON (FULL_NAME, BIRTH) VALUES ('Ivan Karulin', '1996-08-05');
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UPDATE PERSON SET BIRTH = '1998-06-25' WHERE FULL_NAME LIKE '%in';
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DELETE FROM PERSON WHERE FULL_NAME='Maksim Rozkov';
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SELECT * FROM PERSON;
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INSERT INTO BUILDING (ADDRESS, DATE_BUILD, STATUS, TYPE_BUIDING, PERSON_ID) VALUES ('Saint Petersburg', '1956-02-06', 'done', 'жилое', 1);
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INSERT INTO BUILDING (ADDRESS, DATE_BUILD, STATUS, TYPE_BUIDING, PERSON_ID) VALUES ('Moscow', '1981-05-26', 'done', 'жилое', 1);
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INSERT INTO BUILDING (ADDRESS, DATE_BUILD, STATUS, TYPE_BUIDING, PERSON_ID) VALUES ('Saint Petersburg', '1843-12-15', 'done', 'жилое', 4);
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INSERT INTO BUILDING (ADDRESS, DATE_BUILD, STATUS, TYPE_BUIDING, PERSON_ID) VALUES ('Saint Petersburg', '1799-04-09', 'done', 'жилое', 5);
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INSERT INTO BUILDING (ADDRESS, DATE_BUILD, STATUS, TYPE_BUIDING) VALUES ('Moscow', '1650-01-01', 'done', 'жилое');
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INSERT INTO BUILDING (ADDRESS, DATE_BUILD, STATUS, TYPE_BUIDING) VALUES ('Moscow', '1999-11-01', 'done', 'жилое');
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INSERT INTO BUILDING (ADDRESS, STATUS, TYPE_BUIDING) VALUES ('Moscow', 'build', 'БЦ');
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SELECT * FROM BUILDING;
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-- ////////////////////////////////////////////Запросы данных из БД///////////////////////////////////////////
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SELECT * FROM BUILDING ORDER BY ID DESC; -- сортировка по полю id в обратном порядке
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SELECT DISTINCT(STATUS) FROM BUILDING; -- выводит уникальные значения поля status
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SELECT COUNT(id) FROM BUILDING; -- выводит количество записей поля id
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SELECT * FROM PERSON p LEFT JOIN BUILDING b ON p.ID=b.PERSON_ID WHERE b.PERSON_ID is null;
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SELECT * FROM PERSON RIGHT JOIN BUILDING ON PERSON.ID=BUILDING.PERSON_ID WHERE BUILDING.PERSON_ID is null;
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SELECT p.ID, b.ADDRESS, b.PERSON_ID FROM PERSON p JOIN BUILDING b ON p.ID=b.PERSON_ID; -- тоже что и INNER JOIN;
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