From 0c7c41f8586378511633b19d44510318108b2bf7 Mon Sep 17 00:00:00 2001
From: UMTS at Teleco <crt@teleco.ch>
Date: Thu, 8 Jan 2026 03:05:33 +0100
Subject: mmm

---
 apply-updates.sh                                                  | 2 +-
 .../database/dev/update_003_make_zone_code_required_unique.sql    | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 backend/database/dev/update_003_make_zone_code_required_unique.sql

diff --git a/apply-updates.sh b/apply-updates.sh
index ae13767..76c3519 100755
--- a/apply-updates.sh
+++ b/apply-updates.sh
@@ -70,7 +70,7 @@ if [[ ! -d "$UPDATES_DIR" ]]; then
 fi
 
 # Find update scripts
-update_scripts=($(find "$UPDATES_DIR" -name "update_*.sql" | sort))
+update_scripts=($(find "$UPDATES_DIR" -name "update_003*.sql" | sort))
 
 if [[ ${#update_scripts[@]} -eq 0 ]]; then
   echo "No update scripts found in $UPDATES_DIR."
diff --git a/backend/database/dev/update_003_make_zone_code_required_unique.sql b/backend/database/dev/update_003_make_zone_code_required_unique.sql
new file mode 100644
index 0000000..08e8896
--- /dev/null
+++ b/backend/database/dev/update_003_make_zone_code_required_unique.sql
@@ -0,0 +1,8 @@
+-- Make zone_code required and unique
+-- This ensures data integrity for audits and lookups
+
+-- First, modify the column to be NOT NULL
+ALTER TABLE `zones` MODIFY `zone_code` VARCHAR(50) NOT NULL;
+
+-- Then add the unique constraint
+ALTER TABLE `zones` ADD UNIQUE KEY `unique_zone_code` (`zone_code`);
-- 
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