From bb0f5dd9b854c25019de8811316adc882f0217f6 Mon Sep 17 00:00:00 2001
From: jason <stedwell@gmail.com>
Date: Sun, 8 Mar 2026 23:39:22 -0500
Subject: [PATCH] Fix: Remove UNIQUE constraint from microchip field to allow
 NULL values

---
 server/db/init.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/server/db/init.js b/server/db/init.js
index 42bfcd6..b6aefb6 100644
--- a/server/db/init.js
+++ b/server/db/init.js
@@ -26,7 +26,7 @@ function initDatabase(dbPath) {
       sex TEXT NOT NULL CHECK(sex IN ('male', 'female')),
       birth_date DATE,
       color TEXT,
-      microchip TEXT UNIQUE,
+      microchip TEXT,
       photo_urls TEXT, -- JSON array of photo URLs
       notes TEXT,
       is_active INTEGER DEFAULT 1,
@@ -35,6 +35,13 @@ function initDatabase(dbPath) {
     )
   `);
 
+  // Create unique index for microchip that allows NULL values
+  db.exec(`
+    CREATE UNIQUE INDEX IF NOT EXISTS idx_dogs_microchip 
+    ON dogs(microchip) 
+    WHERE microchip IS NOT NULL
+  `);
+
   // Parents table - Relationship mapping
   db.exec(`
     CREATE TABLE IF NOT EXISTS parents (