SQL

mysql

SELECT CONCAT(first_name, ' ', last_name) AS 'Name', dept FROM users;

What is mysql

MySQL is an open source relational database management system. Where sql stands 
for Sturctured Query Language And My is drived from the co-founder's daughter name 'My'
Name Of Co-founder : "Michael Widenius"

mysql

MySQL is an open-source relational database management system (RDBMS). 
It runs on the web as well as on the server. 
MySQL is fast, reliable, and easy to use. It is open-source software. 
MySQL uses standard SQL and compiles on a number of platforms. 
It is a multithreaded, multi-user SQL database management system.

The data in a MySQL database is stored in the form of tables. 
A table is a collection of related data, and it consists of columns and rows.

what is mysql?

MySQL is an open source DBMS which is built, supported and distributed by MySQL(ORACLE).

What is mySQL

MySQL is a database management system if u want to read more about here is the source https://en.wikipedia.org/wiki/MySQL 

mysql

sudo mysql -u root -p

MySQL

INSERT INTO`table2`(name, email)
SELECT name, email
FROM `table1`

mysql

DELETE FROM `utilisateur` WHERE `id` = '2';

mysql

GROUP_CONCAT(IF(column1='', null, column1))

mysql

json_extract(bms, '$.cell_voltage_1')

MYSQL

delimiter $$
create procedure select_or_insert()
begin
  IF EXISTS (select * from users where username = 'something') THEN
    update users set id= 'some' where username = 'something';
  ELSE 
    insert into users (username) values ('something');
  END IF;
end $$
delimiter ;

mysql

import mysql.connector

MYSQL

GRANT CREATE ON *.* TO 'testuser'@'localhost';