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node.mysql.basic's Introduction

#nodejs and mysql basic introduction

# instalition

npm install express

npm install mysql 

npm install ejs 

# connection

var connection = mysql.createConnection({
  host     : 'mysql server ip adress / if you run local server : localhost ',
  user     : 'root',
  password : 'mysql server password',
  database : 'mysql server database name'
});

connection.connect();

# request and response

var row = [];  // create a list

	 connection.query('SELECT * FROM table_name', function (err, rows) { // open query 
        if (err) {
            console.log(err);
        } else {
            if (rows.length) {
                for (var i = 0, len = rows.length; i < len; i++) {

                    row[i] = rows[i];  // pushing list all veriable from sending mysql server 
                    console.log(row);  // write the console 
                }
                
            }
        }
        res.render('index',{rows:row}) // post index page and its all veriables name is rows 
    })

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