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

1 vote194 views1 answer
Postgresql convert text to float
SQL
0 vote200 views1 answer
Drop procedure sql
SQL
0 vote254 views1 answer
Create table as select sql server error
SQL
3 votes196 views1 answer
Make a field auto_increment mysql
SQL
3 votes223 views1 answer
Oracle user quota on tablespace
SQL
0 vote204 views1 answer
How to select only id where is not in column mysql
SQL
0 vote197 views1 answer
How to import sqlite driver class in java using maven
SQL
0 vote209 views2 answers
How do I UPDATE from a SELECT in SQL Server?
SQL
2 votes203 views1 answer
Oracle convert run_duration to number
SQL
0 vote255 views1 answer
Postgres dump sql insert
SQL