How to insert json into mysql using node js? - json

Question

var express = require('express');
var app=express();
var length;
var affiliate = require('flipkart-affiliate');
var url = require('url');
var moment=require('moment');
var mysql = require('mysql');
var body;
var getUrl;
var product;
var offer;
var offer1;
var offer2;
var offer3;
var test1;
var test2;
var test3;
var title=[];
var description=[];
var startTime=[];
var endTime=[];
var json={};
var connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'coupontest'
});
var client = affiliate.createClient({
FkAffId: 'anandhkum',
FkAffToken: 'eb030998c556443087d3b1a27ac569d0',
responseType: 'json'
});
client.getCategoryFeed({
trackingId: 'anandhkum'
}, function(err, result,getUrl){
if(!err){
body=JSON.parse(result);
getUrl=body.apiGroups.affiliate.apiListings.food_nutrition.availableVariants["v1.1.0"].get;
client.getProductsFeed({
url: getUrl
}, function(err, result){
if(!err){
}else {
console.log(err);
}
});
}
});
connection.connect(function(err) {
if (err) {
return console.error('error: ' + err.message);
}
console.log('Connected to the MySQL server.');
});
app.get('/',function (req,res) {
client.getAllOffers(null,function(err, resp) {
if (!err) {
offer = JSON.parse(resp);
test1 = offer.allOffersList.length;
res.send(offer);
for(var i=0;i<test1;i++){
description[i]=offer.allOffersList[i].description;
startTime[i]=offer.allOffersList[i].startTime;
endTime[i]=offer.allOffersList[i].endTime;
}
var stmt = "INSERT INTO offers(description,start_time,end_time) VALUES (?, ?, ?)";
connection.query(stmt, [description,startTime,endTime], function (err, result) {
if (err) throw err.message;
console.log("Number of records inserted: " + result.affectedRows);
});
}
else {
console.log(err);
}
});
});
app.listen(3000);
console.log("Listening to port 3000");
the code is about getting the offer details as json data from flipkart.com and store it into the mysql table.
But I'm getting the error
throw err; // Rethrow non-MySQL errors
ER_WRONG_VALUE_COUNT_ON_ROW: Column count doesn't match value count at row 1
I tried using many sql syntax but it's showing the above error
Can anyone help me on solving the above error?

Answer 1

Try doing it this way, as I can see you want to insert multiple result at once so need to pass an array values which I have made in following query also the error "ER_WRONG_VALUE_COUNT_ON_ROW" is due to incorrect no of ? that you were passing in the query as you need to insert multiple no of rows so you need to make sure you get correct ? count.
var queryString = "";
var insertString = "(?,?,?),";
var values = [];
for(var i=0;i<test1;i++){
description[i]=offer.allOffersList[i].description;
startTime[i]=offer.allOffersList[i].startTime;
endTime[i]=offer.allOffersList[i].endTime;
values.push(description[i],startTime[i],endTime[i]);
queryString = queryString + insertString;
}
queryString = queryString.substring(0, queryString.length - 1); // is used to remove last ',' which will get inserted while we are creating queryString
var stmt = "INSERT INTO offers(description,start_time,end_time) VALUES " + queryString ;
connection.query(stmt,values, function (err, result) {
if (err) throw err.message;
console.log("Number of records inserted: " + result.affectedRows);
});