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( ' Geeks For Geeks ' ) 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: