Created
June 24, 2020 18:05
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set foreign_key_checks = 0; | |
drop table men; | |
drop table hobbies; | |
drop table man_hobbies; | |
set foreign_key_checks = 1; | |
create table if not exists men | |
( | |
id bigint unsigned auto_increment not null, | |
name varchar(255) not null, | |
website varchar(255) not null, | |
birthday date not null, | |
PRIMARY KEY (id) | |
) engine = InnoDB | |
charset = utf8; | |
create table if not exists hobbies | |
( | |
id bigint unsigned auto_increment not null, | |
title varchar(255) not null, | |
PRIMARY KEY (id) | |
) engine = InnoDB | |
charset = utf8; | |
create table if not exists man_hobbies | |
( | |
id_man bigint unsigned not null, | |
id_hobby bigint unsigned not null, | |
PRIMARY KEY (id_man, id_hobby), | |
CONSTRAINT fk_man FOREIGN KEY (id_man) REFERENCES men (id) ON DELETE CASCADE, | |
CONSTRAINT fk_hobby FOREIGN KEY (id_hobby) REFERENCES hobbies (id) ON DELETE CASCADE | |
) engine = InnoDB | |
charset = utf8; | |
insert into men (id, name, website, birthday) value (1, 'Богдан', 'https://hcbogdan.com', '1992-12-06'); | |
insert into hobbies (id, title) | |
values (1, 'talk'), | |
(2, 'bike'), | |
(3, 'code'), | |
(4, 'have-a-fun'); | |
insert into man_hobbies (id_man, id_hobby) | |
values (1, 1), | |
(1, 2), | |
(1, 3); | |
select * | |
from men m | |
join man_hobbies mh on m.id = mh.id_man | |
join hobbies h on mh.id_hobby = h.id | |
where h.title in ('bike'); | |
# SELECT * | |
# FROM men | |
# WHERE age >25 AND hobby IN ('memes' , 'movies' , 'sport' ); |
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