Insert array of records into mysql with Node JS - mysql

Question

I have a array of data something like
var records = [
{Name: '', Id: 1},
{Name: '', Id: 2},
{Name: '', Id: 3},
{Name: '', Id: 4},
{Name: '', Id: 5},
{Name: '', Id: 6}
];
there could be thousands of items inside records array...
Ques1: Can we create a stored procedure which will accept an array of objects in mysql?
Ques2: Is there a way to bulk insert this data into mysql with Node JS?

Answer 1

You can bulk insert the array of records ,but before that you might need to convert it into array of arrays
I use array reduce to get an array something like this
let j=[
{Name: '', Id: 1},
{Name: '', Id: 2},
{Name: '', Id: 3},
{Name: '', Id: 4},
{Name: '', Id: 5},
{Name: '', Id: 6}
];
let values=j.reduce((o,a)=>{
let ini=[];
ini.push(a.Name);
ini.push(a.Id);
o.push(ini);
return o
},[])
console.log(values);
This will output
[["",1],["",2],["",3],["",4],["",5],["",6]]
Now inserting into the mysql database
1-Using normal callback
const con=require('./mysql.js'); //mysql connectionin mysql.js
var sql = "INSERT INTO customers (name, id) VALUES ?";
con.query(sql, [values], function (err, result) { //pass values array (from above) directly here
if (err) throw err;
console.log("Number of records inserted: " + result.affectedRows);
});
});
so the format of multiple data insert should be like [[[a,b],[b,c],[d,k]]]
2-Using promises
var Promise = require("bluebird");//for promises
const promisecon=Promise.promisifyAll(require('./mysql.js'));//
var sql = "INSERT INTO customers (name, id) VALUES ?";
promisecon.queryAsync(sql,[values]).then((result)=>{//bluebird identifies with Async
console.log(result);
}).catch(function(err){
console.log(err);
})
3-Using async await
var sql = "INSERT INTO customers (name, id) VALUES ?";
async function build() {
try {
const result =await con.queryAsync(sql,[values]);
console.log(result);
} catch (err) {
// do something
}
}
build();