Node.js MySQL Stored Procedures

You can call a stored procedure in Node.js by using a database driver to execute it. Here is an example of calling a stored procedure using the mysql driver.

1. First, make sure the MySQL driver is installed. Run the following command in the terminal to install it:

npm install mysql

1. Import the mysql driver in the Node.js file.

const mysql = require('mysql');

1. Establishing a database connection:

const connection = mysql.createConnection({
  host: 'localhost',
  user: 'your_username',
  password: 'your_password',
  database: 'your_database'
});

connection.connect();

1. Invoke a stored procedure.

const callProcedure = (procedureName, args) => {
  return new Promise((resolve, reject) => {
    let queryString = `CALL ${procedureName}(${args.map(arg => mysql.escape(arg)).join(',')})`;

    connection.query(queryString, (error, results) => {
      if (error) {
        reject(error);
      } else {
        resolve(results);
      }
    });
  });
};

1. Execute a stored procedure and handle the results.

callProcedure('your_procedure_name', ['arg1', 'arg2'])
  .then(results => {
    // 处理结果
    console.log(results);
  })
  .catch(error => {
    // 处理错误
    console.error(error);
  });

Please note that the above example is an illustration of calling a stored procedure using the MySQL driver. If you are using a different database, you may need to make adjustments according to the API of the database driver.