NodeJS MySQL Max() Function

We will be using Max() function in MySQL to get Maximum value of some particular column.

Syntax:

MAX(column_name)

Parameters: MAX() function accepts a single parameter as mentioned above and described below.

• column_name: Column’s name from which we have to return the max value.

Return Value: MAX() function returns the maximum value from the particular column in the table.

Module Installation: Install the MySQL module using the following command.

npm install mysql

Database: Our SQL publishers table preview with sample data is shown below.

Example 1:

idex.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");

    // here is the query
    let query = "SELECT MAX(salary) AS max_salary FROM publishers";

    db_con.query(query, (err, rows) => {
        if(err) throw err;

        console.log(rows);
    });
});

Output:

Example 2:

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");

    // here is the query
    let query = "SELECT MAX(salary) AS max_salary
                 FROM publishers WHERE id < 8";

    db_con.query(query, (err, rows) => {
        if(err) throw err;

        console.log(rows);
    });
});

Output: