connection.execute() not working for me

I am trying to use a prepared statement using connection.execute(). the PREG_CAPTURE function is a user defined function in MySQL. I’m using an ES6 multiline string.

Can anyone see why this is not working. Please note this is not intended to be production code so is a little rough.

var getGalleryForPostIDSql = `SELECT gallery_id, ID
FROM (SELECT PREG_CAPTURE( '/(\\[ngg.+id=)([0-9]+)+/' , post_content,2) as gallery_id, post_content,ID, post_type FROM wp_posts p) as t1
WHERE gallery_id IS NOT NULL AND post_type="post" AND ID = ?;`;

connection.connect();

var firstPromise = getVideos(videoSql);

firstPromise.then(function(results){
   //these results are definitely available
    var galleryIds = [];

    //console.log(results[0]);
    results.forEach(function(item,index,results){

        console.log(item); // is populated
        connection.execute(getGalleryForPostIDSql,item.ID, function(err, rows,fields){
            if(err) {
                console.log(err);
                process.exit();
            }
    console.log(rows);// logs an empty array

       });

    });
    return results;

}).then(function(results){
    console.log('next then method call');
}).then(function(){

}).catch(function (e) {
    console.log(e);
});

[codecowboy]

@sidorares thanks. I think I have come to the conclusion that the empty result is actually correct as I have flaws in my logic elsewhere. Thanks for your help - it got me a little further. You can close this issue now.

[sidorares]

Oops, yes, I meant [item.ID]. Do you get any rows back with this change? Why do you think empty result is incorrect?