How to insert data to db2 using node js ( ibm_db) - node.js

Question

Hi Can anyone give an example of how use insert statement in nodejs. I am able to use select query. But for insert query i am getting the result as []. no error can be seen but the values are not added to the original table. I am using db2, ibm_db,express,nodejs and angularjs.

Answer 1

I wrote a blog entry on using DB2 and node.js on Bluemix a while ago. It includes code for an INSERT statement.
As part of the insert
first prepare the statement,
then bind the values to be inserted and
finally execute the statement.
Here is the relevant code snippet, the full context is in the blog:
exports.insertIP = function(ibmdb,connString,ipinfo) {
console.log("insertIP called",ipinfo);
ibmdb.open(connString, function(err, conn) {
if (err ) {
res.send("error occurred " + err.message);
}
else {
// prepare the SQL statement
conn.prepare("INSERT INTO IP.VISITORS(vtime,ip,country_code,country,region_code,region,city,zip,latitude,longitude,metro,area) VALUES (current timestamp,?,?,?,?,?,?,?,?,?,?,?)", function(err, stmt) {
if (err) {
//could not prepare for some reason
console.log(err);
return conn.closeSync();
}
//Bind and Execute the statment asynchronously
stmt.execute([ipinfo["ip"],ipinfo["country_code"],ipinfo["country_name"],ipinfo["region_code"],ipinfo["region_name"],ipinfo["city"],ipinfo["zipcode"], ipinfo["latitude"], ipinfo["longitude"],ipinfo["metro_code"],ipinfo["area_code"]], function (err, result) {
console.log(err);
// Close the connection to the database
conn.close(function(){
console.log("Connection Closed");
});
});
});
}
})};

Answer 2

I would suggest and recommend (as one of the members of node-ibm_db) to follow the node-ibm_db github repository (https://github.com/ibmdb/node-ibm_db) , we have updated the README document as well as the list of APIs to do particular tasks.
For your above query you can use ".prepare(sql, callback)" or ".prepareSync(sql)" API (as per your requirements Async/sync call), below is the attached code snippet and URL link for particular API documentation.
var ibmdb = require("ibm_db"),
cn ="DATABASE=dbname;HOSTNAME=hostname;PORT=port;PROTOCOL=TCPIP;UID=dbuser;PWD=xxx";
ibmdb.open(cn,function(err,conn){
conn.prepare("insert into hits (col1, col2) VALUES (?, ?)",
function (err, stmt) {
if (err) {
//could not prepare for some reason
console.log(err);
return conn.closeSync();
}
//Bind and Execute the statment asynchronously
stmt.execute(['something', 42], function (err, result) {
if( err ) console.log(err);
else result.closeSync();
//Close the connection
conn.close(function(err){});
});
});
});
API documentation(Github URL) : https://github.com/ibmdb/node-ibm_db#-8-preparesql-callback

Answer 3

Try to install jt400 by using the below command
npm install node-jt400 --save
use the below code to insert the data to table name foo.
Follow link https://www.npmjs.com/package/node-jt400 for for details
pool
.insertAndGetId('INSERT INTO foo (bar, baz) VALUES(?,?)',[2,'b'])
.then(id => {
console.log('Inserted new row with id ' + id);
});