Node.js MySQL Order By Clause
Last Updated :
07 Oct, 2021
Introduction: We use the SQL ORDER BY Clause to sort the data with respect to some column value in ascending or descending order.
Syntax:
SELECT * FROM users ORDER BY name;
This will sort all rows of output in ascending order (by default) with respect to name column.
SELECT address FROM users ORDER BY name DESC;
This will sort all rows of output in descending order with respect to name column but return the data of address.
Module Installation: Install the mysql module using the following command:
npm install mysql
Database: Our SQL users table preview with sample data is shown below:
Example 1: Select all columns from the users table but sort them by name in ascending order.
index.js
const mysql = require( "mysql" );
let db_con = mysql.createConnection({
host: "localhost" ,
user: "root" ,
password: '' ,
database: 'gfg_db'
});
db_con.connect((err) => {
if (err) {
console.log( "Database Connection Failed !!!" , err);
return ;
}
console.log( "We are connected to gfg_db database" );
let query = 'SELECT * FROM users ORDER BY name' ;
db_con.query(query, (err, rows) => {
if (err) throw err;
console.log(rows);
});
});
|
Run the index.js file using the following command:
node index.js
Output:
Example 2: Select only the address column from the users table but sort them in descending order of name.
index.js
const mysql = require( "mysql" );
let db_con = mysql.createConnection({
host: "localhost" ,
user: "root" ,
password: '' ,
database: 'gfg_db'
});
db_con.connect((err) => {
if (err) {
console.log( "Database Connection Failed !!!" , err);
return ;
}
console.log( "We are connected to gfg_db database" );
let query = 'SELECT address FROM users ORDER BY name DESC' ;
db_con.query(query, (err, rows) => {
if (err) throw err;
console.log(rows);
});
});
|
Run the index.js file using the following command:
node index.js
Output:
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