Node JS - Node js MySQL Delete - myssql - Node - Node JS tutorial - webnode




Delete Record :

  • You can delete records from an existing table by using the "DELETE " statement in mysql.
 node-js delete table

Learn Node js - node js Tutorial - node-js delete table - - node - Node js Examplesnode-js delete table

Example

  • Delete any record with the address "Mountain 21":
var mysql = require('mysql');

var con = mysql.createConnection({
  host: "localhost",
  user: "yourusername",
  password: "yourpassword",
  database: "mydb"
});

con.connect(function(err) {
  if (err) throw err;
  var sql = "DELETE FROM customers WHERE address = 'Mountain 21'";
  con.query(sql, function (err, result) {
    if (err) throw err;
    console.log("Number of records deleted: " + result.affectedRows);
  });
});

Notice the WHERE clause in the DELETE syntax:

  • The WHERE clause specifies which record or records that should be deleted.
  • If you omit the WHERE clause, all records will be deleted!
  • Save the code above in a file called "wikitechy_db_delete.js" and run the Node JS Tutorial File:
Run "wikitechy_db_delete.js"
C:\Users\Your Name>node wikitechy_db_delete.js 

Output:

Number of records deleted: 1 

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