diff --git a/backend-node/src/services/tableManagementService.ts b/backend-node/src/services/tableManagementService.ts
index 70ed6205..2e67040a 100644
--- a/backend-node/src/services/tableManagementService.ts
+++ b/backend-node/src/services/tableManagementService.ts
@@ -2711,6 +2711,12 @@ export class TableManagementService {
         filterColumn?: string;
         filterValue?: any;
       }; // 🆕 제외 필터 (다른 테이블에 이미 존재하는 데이터 제외)
+      deduplication?: {
+        enabled: boolean;
+        groupByColumn: string;
+        keepStrategy: "latest" | "earliest" | "base_price" | "current_date";
+        sortColumn?: string;
+      }; // 🆕 중복 제거 설정
     }
   ): Promise<EntityJoinResponse> {
     const startTime = Date.now();