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11 lines
501 B
Plaintext
11 lines
501 B
Plaintext
create table A(id int not null primary key) engine=innodb;
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create table B(id int not null auto_increment primary key, f1 int not null, foreign key(f1) references A(id) on delete cascade) engine=innodb;
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create table C(id int not null auto_increment primary key, f1 int not null, foreign key(f1) references B(id) on delete cascade) engine=innodb;
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insert into A values(1), (2);
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DELETE FROM A where id = 1;
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DELETE FROM C where f1 = 2;
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DELETE FROM A where id = 1;
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DROP TABLE C;
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DROP TABLE B;
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DROP TABLE A;
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