Mariadb add foreign key

alter table group_a 
add constraint fk_b_in_a
foreign key(`b_id`) 
    references group_b(`b_id`)
    on delete set null
    on update set null;

Source: mariadbtutorial.com

Create table in mysql mariadb primary key foreign key

CREATE TABLE IF NOT EXISTS `scores` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  UserId int(11) NOT NULL,
  `NICKNAME` varchar(50) NOT NULL,
  `HIGHSCORE` int(11) NOT NULL,
  PRIMARY KEY (`ID`),
  FOREIGN KEY (UserId) REFERENCES USER(Id)
);

Source: stackoverflow.com

Alter table add foreign key mariadb example

alter table caixa add foreign key (idcaixafluxo) references caixafluxo (idcaixafluxo);

Similar codes

0 vote332 views4 answers
Sql year
SQL
0 vote359 views1 answer
How to select a row in sql
SQL
5 votes326 views6 answers
Sql add days to date
SQL
0 vote359 views1 answer
Guid string to binary better
SQL
0 vote370 views1 answer
Sql filter rows with condition
SQL
0 vote335 views1 answer
Cara menampilkan user di mysql terminal
SQL
7 votes369 views6 answers
Mysql group concat
SQL
1 vote403 views1 answer
How to put value in variable mysql
SQL
1 vote340 views2 answers
Sql groub by count
SQL
0 vote443 views1 answer
InnoDB: Setting file 'C:\xampp\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
SQL