chore: scope campaign identifier index with deleted at (#7821)

packages/modules/promotion/src/models/campaign.ts

@@ -1,5 +1,10 @@
 import { DAL } from "@medusajs/types"
-import { DALUtils, Searchable, generateEntityId } from "@medusajs/utils"
+import {
+  DALUtils,
+  Searchable,
+  createPsqlIndexStatementHelper,
+  generateEntityId,
+} from "@medusajs/utils"
 import {
   BeforeCreate,
   Collection,
@@ -12,7 +17,6 @@ import {
   PrimaryKey,
   Property,
   Rel,
-  Unique,
 } from "@mikro-orm/core"
 import CampaignBudget from "./campaign-budget"
 import Promotion from "./promotion"
@@ -24,7 +28,15 @@ type OptionalFields =
   | "ends_at"
   | DAL.SoftDeletableEntityDateColumns
 
-@Entity({ tableName: "promotion_campaign" })
+const tableName = "promotion_campaign"
+const CampaignUniqueCampaignIdentifier = createPsqlIndexStatementHelper({
+  tableName,
+  columns: ["campaign_identifier"],
+  unique: true,
+  where: "deleted_at IS NULL",
+})
+
+@Entity({ tableName })
 @Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
 export default class Campaign {
   [OptionalProps]?: OptionalFields | OptionalRelations
@@ -41,10 +53,7 @@ export default class Campaign {
   description: string | null = null
 
   @Property({ columnType: "text" })
-  @Unique({
-    name: "IDX_campaign_identifier_unique",
-    properties: ["campaign_identifier"],
-  })
+  @CampaignUniqueCampaignIdentifier.MikroORMIndex()
   campaign_identifier: string
 
   @Property({