Mysql unique two columns

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

0 vote375 views1 answer
Creating h2 database in relative directory eclopse
SQL
22 votes363 views3 answers
Join three tables sql
SQL
1 vote350 views1 answer
Return size of tables in mysql
SQL
0 vote426 views1 answer
Wordpress make wp user in db
SQL
21 votes405 views6 answers
Update sql
SQL
0 vote345 views1 answer
Opensuse start MySQL
SQL
0 vote331 views1 answer
Deleted table in sql trigger
SQL
-1 vote355 views1 answer
Install mysql 5.7 ubuntu 20.04
SQL
1 vote431 views1 answer
Ora-06502: pl/sql: numeric or value error: character string buffer too small
SQL
0 vote367 views1 answer
Creating a simple notify in postgresql
SQL