Node.js MySQL LPAD() Function
Last Updated :
07 Oct, 2021
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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:
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:
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:
