invoice item total and subtotal

database/migrations/.snapshot-negareh.json

@@ -2831,6 +2831,16 @@
           "nullable": false,
           "mappedType": "integer"
         },
+        "sub_total": {
+          "name": "sub_total",
+          "type": "int",
+          "generated": "(COALESCE(unit_price, 0) * quantity) STORED",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "integer"
+        },
         "discount": {
           "name": "discount",
           "type": "int",
@@ -2840,6 +2850,16 @@
           "nullable": true,
           "mappedType": "integer"
         },
+        "total": {
+          "name": "total",
+          "type": "int",
+          "generated": "((COALESCE(unit_price, 0) * quantity) - COALESCE(discount, 0)) STORED",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "integer"
+        },
         "description": {
           "name": "description",
           "type": "text",

database/migrations/Migration20260516121012.ts

@@ -0,0 +1,9 @@
+import { Migration } from '@mikro-orm/migrations';
+
+export class Migration20260516121012 extends Migration {
+
+  override async up(): Promise<void> {
+    this.addSql(`alter table "invoice_items" add column "sub_total" int generated always as (COALESCE(unit_price, 0) * quantity) STORED not null, add column "total" int generated always as ((COALESCE(unit_price, 0) * quantity) - COALESCE(discount, 0)) STORED not null;`);
+  }
+
+}