Node.js MySQL TRIM() Function
TRIM() function is a built-in function in MySQL that is used to trim all spaces from both sides of the input string.
Syntax:
TRIM(string)
Parameters: It takes one parameter as follows:
- string: It is the string to be trimmed from both sides.
Return Value: It returns string after trimming from both sides.
Module Installation: Install the mysql module using the following command:
npm install mysql
Example 1: Hard-Coded Query
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 TRIM( ' Beginner For Beginner ' ) AS TRIM_Output`; 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: Dynamic Query
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 ? in query let query = `SELECT TRIM(?) AS TRIM_Output`; // Dynamic Input let input_string = " Pratik Raut " ; // Notice Second Dynamic Parameter db_con.query(query, input_string, (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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