function LUUID(uuid) {
    var hex = uuid.replace(/[{}-]/g, "");
    return new UUID(hex);
}
db.getCollection('Groups').find({ownerDomainId:LUUID("0f8af6de-2411-c147-825b-613344769438")})

select Groups.groupName, Channels.channelName from Groups join Channels where Groups.allowedChannels = Channels.id

function LUUID(uuid) {
    var hex = uuid.replace(/[{}-]/g, ""); // removes extra characters
    return new UUID(hex); //creates new UUID
}
db.getCollection('Groups').find({groupName:/^101-/, ownerDomainId:LUUID("0f8af6de-2411-c147-825b-613344769438")}, {groupName:1, allowedChannels:1}).forEach(
function(row) {
    print("Item " + row.groupName);
    db.getCollection('Channels').find({_id: {$in: row.allowedChannels}}).sort({channelName:1}).forEach(function(ch) {
        print("  channel " + ch.channelName);
    })
})