Check value exist or Not (AND) Insert the values in Sqlite database using Phonegap

I have written a code that I id not exist insert values of a record in sqlite database.
If already exist just update or do something else. Its just easy way to do.
I have followed this code and written some phonegap application. easy to bind from the sqlite table further use to display the page.

function insertIndustry(industryID,industry)
{
    db = window.openDatabase("mydb","0.1","InsuranceDb", 500000);
    
    var selectQuery ="SELECT COUNT(*) AS MyCount FROM industrymaster WHERE industryId="+industryID;
    db.transaction(function selectQueryDB(tx){tx.executeSql(selectQuery,[],function txSuccessResult(tx,results) {
                          
                              var messageid = results.rows.item(0)['MyCount'];
                               if(messageid == 1)
                                {
                                 console.log("exist");
                                }
                                else
                                {
                                 tx.executeSql("INSERT INTO industrymaster(industryId, industry) VALUES ("+industryID+",'"+industry+"')");
                                }
                              
                             },errorCB);  }, errorDB);
}

function errorCB(err) {
     console.log("Error processing SQL 1: "+err.code);
}

function errorDB(error) {
    console.log(error +"Error processing SQL 1: ");   
}