1. Insert Record
1.1. Insert Single
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
var sql = "Insert Inyo employees (id, name, age, city) Values ('1', 'Ajeet Kumar', '27', 'Allahabad')";
con.query(sql, function (err, result) {
if (err) throw err;
console.log("1 record inserted");
});
1.2. Insert Multi Record
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
var sql = "INSERT INTO employees (id, name, age, city) VALUES ?";
var values = [
['2', 'Bharat Kumar', '45', 'Mumbai'],
['3', 'John Tan', '25', ?Las Vegas'],
['4', 'David Mur', '17', ?CA']
];
con.query(sql, [values], function (err, result) {
if (err) throw err;
console.log("Number of records inserted: " + result.affectedRows);
});
});
2. Delete Record
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
var sql = "DELETE FROM employees WHERE city = 'Malyasia'";
con.query(sql, function (err, result) {
if (err) throw err;
console.log("Number of records deleted: " + result.affectedRows);
});
});
3. Select Record
3.1. Select all data
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
con.query("SELECT * FROM employees", function (err, result) {
if (err) throw err;
console.log(result);
});
});
3.2 Select Condition Unique
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
con.query("SELECT * FROM employees WHERE id = '1'", function (err, result) {
if (err) throw err;
console.log(result);
});
});
3.3. Select Condition Wildcard
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
con.query("SELECT * FROM employees WHERE city LIKE 'M%'", function (err, result) {
if (err) throw err;
console.log(result);
});
});
4. Drop Table
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "abcd",
database: "dbMysql"
});
con.connect(function(err) {
if (err) throw err;
var sql = "DROP TABLE employee2";
con.query(sql, function (err, result) {
if (err) throw err;
console.log("Table deleted");
});
});
