UPDATE musique_links JOIN (
SELECT f.feed AS true_feed, l.url as url FROM globes__feed f JOIN globes__link l ON l.id = f.linkid
) as true_feeds
ON true_feeds.url = musique_links.link_url
SET musique_links.link_rss = true_feeds.true_feed
WHERE musique_links.link_url = true_feeds.url
AND musique_links.link_rss = ''


// ajouter les flux
UPDATE sante_links JOIN (
SELECT f.feed AS true_feed, l.url as url FROM moqs_feed f JOIN moqs_link l ON l.id = f.linkid
) as true_feeds
ON true_feeds.url = sante_links.link_url
SET sante_links.link_rss = true_feeds.true_feed
WHERE sante_links.link_url = true_feeds.url
AND sante_links.link_rss = ''


// trouver les doublons
SELECT DISTINCT(sante_links.link_id) FROM sante_links, sante_links as dtable   
WHERE dtable.link_rss = sante_links.link_rss 
AND sante_links.link_id > dtable.link_id 
AND dtable.link_rss <> ''
AND sante_links.link_rss <> '' 
>> IDS 
UPDATE sante_links SET link_rss = '' WHERE link_id IN (IDS);