타입스크립트 에러 수정

backend-node/src/services/batchService.ts

@@ -16,7 +16,6 @@ import {
   UpdateBatchConfigRequest,
 } from "../types/batchTypes";
 import { BatchExternalDbService } from "./batchExternalDbService";
-import { DbConnectionManager } from "./dbConnectionManager";
 
 export class BatchService {
   /**
@@ -475,7 +474,13 @@ export class BatchService {
     try {
       if (connectionType === "internal") {
         // 내부 DB 테이블 조회
-        const tables = await DbConnectionManager.getInternalTables();
+        const tables = await query<TableInfo>(
+          `SELECT table_name, table_type, table_schema
+           FROM information_schema.tables
+           WHERE table_schema = 'public'
+           AND table_type = 'BASE TABLE'
+           ORDER BY table_name`
+        );
         return {
           success: true,
           data: tables,
@@ -509,7 +514,13 @@ export class BatchService {
     try {
       if (connectionType === "internal") {
         // 내부 DB 컬럼 조회
-        const columns = await DbConnectionManager.getInternalColumns(tableName);
+        const columns = await query<ColumnInfo>(
+          `SELECT column_name, data_type, is_nullable, column_default
+           FROM information_schema.columns
+           WHERE table_schema = 'public' AND table_name = $1
+           ORDER BY ordinal_position`,
+          [tableName]
+        );
         return {
           success: true,
           data: columns,
@@ -543,7 +554,9 @@ export class BatchService {
     try {
       if (connectionType === "internal") {
         // 내부 DB 데이터 조회
-        const data = await DbConnectionManager.getInternalData(tableName, 10);
+        const data = await query<any>(
+          `SELECT * FROM ${tableName} LIMIT 10`
+        );
         return {
           success: true,
           data,