Introduction: Learn about Selecting data from MySQL database using node.js. We are going to use standard SELECT FROM SQL Query.
Syntax:
SELECT [column] FROM [table_name]
Example:
1) SELECT * FROM customers selecting all columns from customers table. 2) SELECT name, address FROM customers
SQL users Table Preview:
Example 1: select all columns from users table
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" );
// This query will be used to select columns
let query = 'SELECT * FROM users' ;
db_con.query(query, (err, rows) => {
if (err) throw err;
console.log(rows);
});
}); |
Output:
Example 2: select name column from users table
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" );
// notice the name column below
let query = 'SELECT name FROM users' ;
db_con.query(query, (err, rows) => {
if (err) throw err;
console.log(rows);
});
}); |
Output: