MySQL provides the SPACE function to generate a series of spaces. In this article, we will learn how to use SPACE in MySQL.
The basic syntax of a SPACE is as follows:
SELECT SPACE(n);
We will be using docker in this article, but feel free to install your database locally instead. Once you have docker installed, create a new file called docker-compose.yml
and add the following.
version: '3'
services:
db:
image: mysql:latest
container_name: db
environment:
MYSQL_ROOT_PASSWORD: root_pass
MYSQL_DATABASE: app_db
MYSQL_USER: db_user
MYSQL_PASSWORD: db_user_pass
ports:
- "6033:3306"
volumes:
- dbdata:/var/lib/mysql
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: pma
links:
- db
environment:
PMA_HOST: db
PMA_PORT: 3306
PMA_ARBITRARY: 1
restart: always
ports:
- 8081:80
volumes:
dbdata:
Next, run docker-compose up
.
Now, navigate to http://localhost:8081/
to access phpMyAdmin. Then log in with the username root
and pass root_pass
.
Click the SQL tab and you are ready to go.
Space is a simply function to generates a number of spaces requests. Here is the example.
select space(10) as res;
res |
---|
We can also use the space to add spaces between strings and names.
select concat("Jane", space(5), "Doe") as res;
res |
---|
Jane Doe |