diff --git a/backend-node/src/services/multiConnectionQueryService.ts b/backend-node/src/services/multiConnectionQueryService.ts
index 45e77500..b5776b43 100644
--- a/backend-node/src/services/multiConnectionQueryService.ts
+++ b/backend-node/src/services/multiConnectionQueryService.ts
@@ -991,18 +991,18 @@ export class MultiConnectionQueryService {
 
       switch (operation) {
         case "select":
-          let query = `SELECT * FROM ${tableName}`;
+          let sql = `SELECT * FROM ${tableName}`;
           const queryParams: any[] = [];
 
           if (conditions && Object.keys(conditions).length > 0) {
             const whereClause = Object.keys(conditions)
               .map((key, index) => `${key} = $${index + 1}`)
               .join(" AND ");
-            query += ` WHERE ${whereClause}`;
+            sql += ` WHERE ${whereClause}`;
             queryParams.push(...Object.values(conditions));
           }
 
-          return await query(query, queryParams);
+          return await query(sql, queryParams);
 
         case "insert":
           if (!data) throw new Error("INSERT 작업에는 데이터가 필요합니다.");