diff --git a/fill_fqdn_from_domain_ltd.sql b/fill_fqdn_from_domain_ltd.sql
new file mode 100644
index 0000000..83c65ff
--- /dev/null
+++ b/fill_fqdn_from_domain_ltd.sql
@@ -0,0 +1,46 @@
+-- Remplit les fqdn manquants à partir de hostname + domain_ltd.
+-- Cible : servers où fqdn IS NULL/vide ET domain_ltd renseigné.
+-- Idempotent.
+
+\echo '═══ AVANT ═══'
+
+SELECT 'fqdn_null'                AS scope, COUNT(*) FROM public.servers WHERE fqdn IS NULL OR fqdn = ''
+UNION ALL
+SELECT 'fqdn_null_avec_dltd'      AS scope, COUNT(*) FROM public.servers
+ WHERE (fqdn IS NULL OR fqdn = '') AND domain_ltd IS NOT NULL AND domain_ltd <> ''
+UNION ALL
+SELECT 'fqdn_null_sans_dltd'      AS scope, COUNT(*) FROM public.servers
+ WHERE (fqdn IS NULL OR fqdn = '') AND (domain_ltd IS NULL OR domain_ltd = '')
+UNION ALL
+SELECT 'fqdn_total'               AS scope, COUNT(*) FROM public.servers WHERE fqdn IS NOT NULL AND fqdn <> '';
+
+\echo '═══ APERÇU 10 LIGNES À MAJ ═══'
+
+SELECT hostname,
+       domain_ltd,
+       LOWER(hostname::text) || '.' || REGEXP_REPLACE(domain_ltd, '^\.+', '') AS fqdn_calcule
+  FROM public.servers
+ WHERE (fqdn IS NULL OR fqdn = '')
+   AND domain_ltd IS NOT NULL AND domain_ltd <> ''
+ ORDER BY hostname
+ LIMIT 10;
+
+\echo '═══ UPDATE ═══'
+
+UPDATE public.servers
+   SET fqdn = LOWER(hostname::text) || '.' || REGEXP_REPLACE(domain_ltd, '^\.+', ''),
+       updated_at = NOW()
+ WHERE (fqdn IS NULL OR fqdn = '')
+   AND domain_ltd IS NOT NULL AND domain_ltd <> '';
+
+\echo '═══ APRÈS ═══'
+
+SELECT 'fqdn_null'                AS scope, COUNT(*) FROM public.servers WHERE fqdn IS NULL OR fqdn = ''
+UNION ALL
+SELECT 'fqdn_null_avec_dltd_residuel' AS scope, COUNT(*) FROM public.servers
+ WHERE (fqdn IS NULL OR fqdn = '') AND domain_ltd IS NOT NULL AND domain_ltd <> ''
+UNION ALL
+SELECT 'fqdn_null_sans_dltd'      AS scope, COUNT(*) FROM public.servers
+ WHERE (fqdn IS NULL OR fqdn = '') AND (domain_ltd IS NULL OR domain_ltd = '')
+UNION ALL
+SELECT 'fqdn_total'               AS scope, COUNT(*) FROM public.servers WHERE fqdn IS NOT NULL AND fqdn <> '';