updated schema so same region name can exist in differentcountries

src/server/db/schema.ts

@@ -7,6 +7,7 @@ import {
   text,
   timestamp,
   uuid,
+  unique,
 } from "drizzle-orm/pg-core";
 import { relations } from "drizzle-orm";
 
@@ -95,11 +96,17 @@ export const subRegionsRelations = relations(subRegions, ({ many, one }) => ({
   }),
 }));
 
-export const regions = createTable("region", {
+export const regions = createTable(
+  "region",
+  {
     id: uuid("id").primaryKey().notNull().defaultRandom(),
-  name: text("name").notNull().unique(),
+    name: text("name").notNull(),
     countryId: uuid("countryId").notNull(),
-});
+  },
+  (t) => ({
+    uniqueRegion: unique().on(t.name, t.countryId),
+  }),
+);
 
 export const regionsRelations = relations(regions, ({ many, one }) => ({
   wines: many(wines),