nodejs delete in mysql

To delete data from a MySQL database using Node.js, you can follow these steps:

1. Install the MySQL module: First, you need to install the MySQL module for Node.js. You can do this by running the following command in your terminal:

npm install mysql

1. Require the module: In your Node.js application, require the MySQL module using the require keyword:

const mysql = require('mysql');

1. Create a connection: Establish a connection to the MySQL database by creating a connection object. Provide the necessary database connection details, such as host, user, password, and database name:

const connection = mysql.createConnection({
  host: 'localhost',
  user: 'username',
  password: 'password',
  database: 'database_name'
});

1. Connect to the database: Connect to the MySQL database using the connect method of the connection object:

connection.connect((error) => {
  if (error) throw error;
  console.log('Connected to the MySQL server.');
});

1. Delete data: Use the query method of the connection object to execute a DELETE statement. Pass the DELETE statement as a string parameter to the query method:

const deleteQuery = 'DELETE FROM table_name WHERE condition';
connection.query(deleteQuery, (error, result) => {
  if (error) throw error;
  console.log('Data deleted:', result);
});

In the code above, replace table_name with the name of the table from which you want to delete data. Also, update the condition with the appropriate condition for deleting specific rows.

1. Close the connection: After executing the delete query, close the connection to the MySQL server using the end method of the connection object:

connection.end((error) => {
  if (error) throw error;
  console.log('Connection closed.');
});

Remember to handle any errors that may occur during the execution of these steps by using appropriate error handling techniques.