POST Method

Following this method and put this in main file api.js

app.post('/insert', function(req, res){
    var sql  = 'INSERT INTO t_movie (movie_title, movie_rate) VALUES (?, ?)';
    var body = [req.body.movie_title, req.body.movie_rate];
    con.query(sql, body, function(err){
       if(err){
           res.json({"Error": true, "Message": "SQL Error"});
       } else {
           res.json({"Error": false, "Message": "Success"})
       }
    });
})

In Postman you select method to POST and type localhost:3000/insert but, before you Send you must insert in body form. Look at picture below

I insert new movie with Movie Title IT and Movie Rate 9