diff --git a/backend/src/db.js b/backend/src/db.js
index a80ef28..bbc3c0c 100644
--- a/backend/src/db.js
+++ b/backend/src/db.js
@@ -96,6 +96,11 @@ if (!cols.includes('bemerkung')) db.exec("ALTER TABLE calculations ADD COLUMN be
 
 // Migrationen order_items
 const oiCols = db.prepare("PRAGMA table_info(order_items)").all().map(r => r.name);
-if (!oiCols.includes('custom_price')) db.exec("ALTER TABLE order_items ADD COLUMN custom_price REAL");
-if (!oiCols.includes('status'))       db.exec("ALTER TABLE order_items ADD COLUMN status TEXT NOT NULL DEFAULT 'warteliste'");
+if (!oiCols.includes('custom_price'))    db.exec("ALTER TABLE order_items ADD COLUMN custom_price REAL");
+if (!oiCols.includes('status'))          db.exec("ALTER TABLE order_items ADD COLUMN status TEXT NOT NULL DEFAULT 'warteliste'");
+if (!oiCols.includes('qty_warteliste'))  db.exec("ALTER TABLE order_items ADD COLUMN qty_warteliste INTEGER NOT NULL DEFAULT 0");
+if (!oiCols.includes('qty_in_arbeit'))   db.exec("ALTER TABLE order_items ADD COLUMN qty_in_arbeit INTEGER NOT NULL DEFAULT 0");
+if (!oiCols.includes('qty_fertig'))      db.exec("ALTER TABLE order_items ADD COLUMN qty_fertig INTEGER NOT NULL DEFAULT 0");
+// Bestehende Einträge: alle Stücke auf Warteliste setzen falls noch keine Qtys gesetzt
+db.exec("UPDATE order_items SET qty_warteliste=stueckzahl WHERE qty_warteliste=0 AND qty_in_arbeit=0 AND qty_fertig=0");
 module.exports = db;