如何使用GROUP_CONCAT子句显示唯一链接

I'm using the GROUP_CONCAT clause to group names of models that belong to a particular update. For example update A features model 1 and model 2. Each of the models has their own biography page. However, since I used the GROUP_CONCAT clause both the model 1 and model 2 links go to same biography page. Instead of:

<a href="bio.php?model_id=1"> model 1 , model 2 </a>

I want this result:

<a href="bio.php?model_id=1"> model 1 </a> , <a href="bio.php?model_id=2"> model 2</a>

Here is SQL:

SELECT updates.update_id, title, posted, duration, updates.thumbnail, updates.alt_tag, updates.title_tag, updates.visible, models.model_id, 
GROUP_CONCAT(CONCAT(' ', first_name, ' ', last_name, ' ')) AS full_name
FROM updates, models, updates_models
WHERE updates.update_id = updates_models.update_id AND models.model_id = updates_models.model_id
GROUP BY updates.update_id, title, posted, duration, updates.thumbnail, updates.alt_tag, updates.title_tag, updates.visible