/SQL/Mysql two column combination unique

Mysql two column combination unique

CREATE TABLE `content_html` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `id_box_elements` int(11) DEFAULT NULL,
  `id_router` int(11) DEFAULT NULL,
  `content` mediumtext COLLATE utf8_czech_ci NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `id_box_elements` (`id_box_elements`,`id_router`)
);

Source: stackoverflow.com

Mysql unique two columns

CREATE TABLE IF NOT EXISTS cliente (
	id bigint primary key auto_increment,
    nome varchar(100) not null,
    email varchar(100) not null unique,
    senha varchar(255) not null,
    documento varchar(50) not null unique,
    dataCadastro date not null
) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;

Similar codes

1 vote341 views1 answer
Sql query row number group by
SQL
5 votes365 views1 answer
AND OR NOT operators sql
SQL
1 vote346 views1 answer
Sql try catch
SQL
1 vote358 views1 answer
Mysql get domain from url
SQL
1 vote337 views1 answer
Minus vs intersect in sql
SQL
1 vote376 views1 answer
Postgresql how to show table names
SQL
0 vote355 views1 answer
Select row with latest date mysql
SQL
4 votes360 views4 answers
Rollback in sql
SQL
8 votes387 views2 answers
How to fetch data from database without last column
SQL
0 vote299 views1 answer
Mysqli or pdo
SQL