Node.js MySQL LPAD() Function

LPAD() Function is a Builtin function in MySQL which is used to attach a given string to text from left side till total length is equal to given value. If the given string is small then it is repeated multiple times.

Syntax:

LPAD(text, total_length, string)

Parameters: LPAD() function accepts three parameters as mentioned above and described below.

• text: In this text value will be padded from left side
• total_length: Total length of output string
• string: This string value will be padded from left side

Return Value: LPAD() function returns a string by attaching value to text from left side till total length is equal to given value. If the value is small then it is repeated multiple times.

Modules:

• mysql: To handle MySQL Connection and Queries

npm install mysql

SQL publishers Table Preview:

Example 1:

Javascript

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 LPAD(' For Geeks', 23, 'Geeks') AS LPAD_Output`;

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

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

Output:

Example 2:

Javascript

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 name, LPAD(name, 20, 'Geek')
               AS LPAD_Output FROM publishers`;

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

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

Output: