feat: Add procedure and function management in flow controller

- Introduced new endpoints in FlowController for listing procedures and retrieving procedure parameters, enhancing the flow management capabilities.
- Updated FlowDataMoveService to support procedure calls during data movement, ensuring seamless integration with external and internal databases.
- Enhanced NodeFlowExecutionService to execute procedure call actions, allowing for dynamic execution of stored procedures within flow nodes.
- Updated frontend components to support procedure selection and parameter management, improving user experience in configuring flow steps.
- Added necessary types and API functions for handling procedure-related data, ensuring type safety and clarity in implementation.

frontend/components/dataflow/node-editor/FlowEditor.tsx

@@ -32,6 +32,7 @@ import { LogNode } from "./nodes/LogNode";
 import { EmailActionNode } from "./nodes/EmailActionNode";
 import { ScriptActionNode } from "./nodes/ScriptActionNode";
 import { HttpRequestActionNode } from "./nodes/HttpRequestActionNode";
+import { ProcedureCallActionNode } from "./nodes/ProcedureCallActionNode";
 import { validateFlow } from "@/lib/utils/flowValidation";
 import type { FlowValidation } from "@/lib/utils/flowValidation";
 
@@ -55,6 +56,7 @@ const nodeTypes = {
   emailAction: EmailActionNode,
   scriptAction: ScriptActionNode,
   httpRequestAction: HttpRequestActionNode,
+  procedureCallAction: ProcedureCallActionNode,
   // 유틸리티
   comment: CommentNode,
   log: LogNode,

frontend/components/dataflow/node-editor/nodes/ProcedureCallActionNode.tsx

@@ -0,0 +1,121 @@
+"use client";
+
+/**
+ * 프로시저/함수 호출 액션 노드
+ * 내부 또는 외부 DB의 프로시저/함수를 호출하는 노드
+ */
+
+import { memo } from "react";
+import { Handle, Position, NodeProps } from "reactflow";
+import { Database, Workflow } from "lucide-react";
+import type { ProcedureCallActionNodeData } from "@/types/node-editor";
+
+export const ProcedureCallActionNode = memo(
+  ({ data, selected }: NodeProps<ProcedureCallActionNodeData>) => {
+    const hasProcedure = !!data.procedureName;
+    const inParams = data.parameters?.filter((p) => p.mode === "IN" || p.mode === "INOUT") ?? [];
+    const outParams = data.parameters?.filter((p) => p.mode === "OUT" || p.mode === "INOUT") ?? [];
+
+    return (
+      <div
+        className={`min-w-[250px] rounded-lg border-2 bg-white shadow-md transition-all ${
+          selected ? "border-violet-500 shadow-lg" : "border-gray-200"
+        }`}
+      >
+        {/* 입력 핸들 */}
+        <Handle
+          type="target"
+          position={Position.Left}
+          className="!h-3 !w-3 !border-2 !border-white !bg-violet-500"
+        />
+
+        {/* 헤더 */}
+        <div className="flex items-center gap-2 rounded-t-lg bg-violet-500 px-3 py-2 text-white">
+          <Workflow className="h-4 w-4" />
+          <div className="flex-1">
+            <div className="text-sm font-semibold">
+              {data.displayName || "프로시저 호출"}
+            </div>
+          </div>
+        </div>
+
+        {/* 본문 */}
+        <div className="space-y-2 p-3">
+          {/* DB 소스 */}
+          <div className="flex items-center gap-2">
+            <Database className="h-3 w-3 text-gray-400" />
+            <span className="text-xs text-gray-600">
+              {data.dbSource === "external" ? (
+                <span className="rounded bg-amber-100 px-2 py-0.5 text-amber-700">
+                  {data.connectionName || "외부 DB"}
+                </span>
+              ) : (
+                <span className="rounded bg-blue-100 px-2 py-0.5 text-blue-700">
+                  내부 DB
+                </span>
+              )}
+            </span>
+            <span
+              className={`ml-auto rounded px-2 py-0.5 text-xs font-medium ${
+                data.callType === "function"
+                  ? "bg-cyan-100 text-cyan-700"
+                  : "bg-violet-100 text-violet-700"
+              }`}
+            >
+              {data.callType === "function" ? "FUNCTION" : "PROCEDURE"}
+            </span>
+          </div>
+
+          {/* 프로시저명 */}
+          <div className="flex items-center gap-2 text-xs">
+            <Workflow className="h-3 w-3 text-gray-400" />
+            {hasProcedure ? (
+              <span className="font-mono text-green-600 truncate">
+                {data.procedureSchema && data.procedureSchema !== "public"
+                  ? `${data.procedureSchema}.`
+                  : ""}
+                {data.procedureName}()
+              </span>
+            ) : (
+              <span className="text-orange-500">프로시저 선택 필요</span>
+            )}
+          </div>
+
+          {/* 파라미터 수 */}
+          {hasProcedure && inParams.length > 0 && (
+            <div className="text-xs text-gray-500">
+              입력 파라미터: {inParams.length}개
+            </div>
+          )}
+
+          {/* 반환 필드 */}
+          {hasProcedure && outParams.length > 0 && (
+            <div className="mt-1 space-y-1 border-t border-gray-100 pt-1">
+              <div className="text-[10px] font-medium text-green-600">
+                반환 필드:
+              </div>
+              {outParams.map((p) => (
+                <div
+                  key={p.name}
+                  className="flex items-center justify-between rounded bg-green-50 px-2 py-0.5 text-[10px]"
+                >
+                  <span className="font-mono text-green-700">{p.name}</span>
+                  <span className="text-gray-400">{p.dataType}</span>
+                </div>
+              ))}
+            </div>
+          )}
+        </div>
+
+        {/* 출력 핸들 */}
+        <Handle
+          type="source"
+          position={Position.Right}
+          className="!h-3 !w-3 !border-2 !border-white !bg-violet-500"
+        />
+      </div>
+    );
+  }
+);
+
+ProcedureCallActionNode.displayName = "ProcedureCallActionNode";

frontend/components/dataflow/node-editor/panels/PropertiesPanel.tsx

@@ -23,6 +23,7 @@ import { LogProperties } from "./properties/LogProperties";
 import { EmailActionProperties } from "./properties/EmailActionProperties";
 import { ScriptActionProperties } from "./properties/ScriptActionProperties";
 import { HttpRequestActionProperties } from "./properties/HttpRequestActionProperties";
+import { ProcedureCallActionProperties } from "./properties/ProcedureCallActionProperties";
 import type { NodeType } from "@/types/node-editor";
 
 export function PropertiesPanel() {
@@ -147,6 +148,9 @@ function NodePropertiesRenderer({ node }: { node: any }) {
     case "httpRequestAction":
       return <HttpRequestActionProperties nodeId={node.id} data={node.data} />;
 
+    case "procedureCallAction":
+      return <ProcedureCallActionProperties nodeId={node.id} data={node.data} />;
+
     default:
       return (
         <div className="p-4">
@@ -185,6 +189,7 @@ function getNodeTypeLabel(type: NodeType): string {
     emailAction: "메일 발송",
     scriptAction: "스크립트 실행",
     httpRequestAction: "HTTP 요청",
+    procedureCallAction: "프로시저 호출",
     comment: "주석",
     log: "로그",
   };

frontend/components/dataflow/node-editor/panels/properties/InsertActionProperties.tsx

@@ -20,6 +20,7 @@ import { tableTypeApi } from "@/lib/api/screen";
 import { getTestedExternalConnections, getExternalTables, getExternalColumns } from "@/lib/api/nodeExternalConnections";
 import { getNumberingRules } from "@/lib/api/numberingRule";
 import type { NumberingRuleConfig } from "@/types/numbering-rule";
+import { getFlowProcedureParameters } from "@/lib/api/flow";
 import type { InsertActionNodeData } from "@/types/node-editor";
 import type { ExternalConnection, ExternalTable, ExternalColumn } from "@/lib/api/nodeExternalConnections";
 
@@ -171,10 +172,19 @@ export function InsertActionProperties({ nodeId, data }: InsertActionPropertiesP
 
   // 연결된 소스 노드에서 필드 가져오기 (재귀적으로 모든 상위 노드 탐색)
   useEffect(() => {
+    // 프로시저 노드 정보를 수집하여 비동기 파라미터 조회에 사용
+    const procedureNodes: Array<{
+      procedureName: string;
+      dbSource: "internal" | "external";
+      connectionId?: number;
+      schema?: string;
+      sourcePath: string[];
+    }> = [];
+
     const getAllSourceFields = (
       targetNodeId: string,
       visitedNodes = new Set<string>(),
-      sourcePath: string[] = [], // 🔥 소스 경로 추적
+      sourcePath: string[] = [],
     ): { fields: Array<{ name: string; label?: string; sourcePath?: string[] }>; hasRestAPI: boolean } => {
       if (visitedNodes.has(targetNodeId)) {
         console.log(`⚠️ 순환 참조 감지: ${targetNodeId} (이미 방문함)`);
@@ -366,7 +376,48 @@ export function InsertActionProperties({ nodeId, data }: InsertActionPropertiesP
             foundRestAPI = foundRestAPI || upperResult.hasRestAPI;
           }
         }
-        // 5️⃣ 통과 노드 (조건, 기타 모든 노드): 상위 노드로 계속 탐색
+        // 5️⃣ 프로시저 호출 노드: 상위 필드 + OUT 파라미터(반환 필드) 추가
+        else if (node.type === "procedureCallAction") {
+          console.log("✅ 프로시저 호출 노드 발견");
+          const upperResult = getAllSourceFields(node.id, visitedNodes, currentPath);
+          fields.push(...upperResult.fields);
+          foundRestAPI = foundRestAPI || upperResult.hasRestAPI;
+
+          const nodeData = node.data as any;
+          const procParams = nodeData.parameters;
+          let hasOutParams = false;
+
+          if (Array.isArray(procParams)) {
+            for (const p of procParams) {
+              if (p.mode === "OUT" || p.mode === "INOUT") {
+                hasOutParams = true;
+                fields.push({
+                  name: p.name,
+                  label: `${p.name} (프로시저 반환)`,
+                  sourcePath: currentPath,
+                });
+              }
+            }
+          }
+
+          // OUT 파라미터가 저장되어 있지 않으면 API로 동적 조회 예약
+          if (!hasOutParams && nodeData.procedureName) {
+            procedureNodes.push({
+              procedureName: nodeData.procedureName,
+              dbSource: nodeData.dbSource || "internal",
+              connectionId: nodeData.connectionId,
+              schema: nodeData.procedureSchema || "public",
+              sourcePath: currentPath,
+            });
+          }
+
+          fields.push({
+            name: "_procedureReturn",
+            label: "프로시저 반환값",
+            sourcePath: currentPath,
+          });
+        }
+        // 6️⃣ 통과 노드 (조건, 기타 모든 노드): 상위 노드로 계속 탐색
         else {
           console.log(`✅ 통과 노드 (${node.type}) → 상위 노드로 계속 탐색`);
           const upperResult = getAllSourceFields(node.id, visitedNodes, currentPath);
@@ -386,31 +437,66 @@ export function InsertActionProperties({ nodeId, data }: InsertActionPropertiesP
     console.log(`   - 총 필드 수: ${result.fields.length}개`);
     console.log(`   - REST API 포함: ${result.hasRestAPI}`);
 
-    // 🔥 중복 제거 개선: 필드명이 같아도 소스가 다르면 모두 표시
-    const fieldMap = new Map<string, (typeof result.fields)[number]>();
-    const duplicateFields = new Set<string>();
+    const applyFields = (allFields: typeof result.fields) => {
+      const fieldMap = new Map<string, (typeof result.fields)[number]>();
+      const duplicateFields = new Set<string>();
 
-    result.fields.forEach((field) => {
-      const key = `${field.name}`;
-      if (fieldMap.has(key)) {
-        duplicateFields.add(field.name);
+      allFields.forEach((field) => {
+        const key = `${field.name}`;
+        if (fieldMap.has(key)) {
+          duplicateFields.add(field.name);
+        }
+        fieldMap.set(key, field);
+      });
+
+      if (duplicateFields.size > 0) {
+        console.warn(`⚠️ 중복 필드명 감지: ${Array.from(duplicateFields).join(", ")}`);
       }
-      // 중복이면 마지막 값으로 덮어씀 (기존 동작 유지)
-      fieldMap.set(key, field);
-    });
 
-    if (duplicateFields.size > 0) {
-      console.warn(`⚠️ 중복 필드명 감지: ${Array.from(duplicateFields).join(", ")}`);
-      console.warn("   → 마지막으로 발견된 필드만 표시됩니다.");
-      console.warn("   → 다중 소스 사용 시 필드명이 겹치지 않도록 주의하세요!");
+      const uniqueFields = Array.from(fieldMap.values());
+      setSourceFields(uniqueFields);
+      setHasRestAPISource(result.hasRestAPI);
+      console.log("✅ 최종 소스 필드 목록:", uniqueFields);
+    };
+
+    // 프로시저 노드에 OUT 파라미터가 저장되지 않은 경우, API로 동적 조회
+    if (procedureNodes.length > 0) {
+      console.log(`🔄 프로시저 ${procedureNodes.length}개의 반환 필드를 API로 조회`);
+      applyFields(result.fields);
+
+      Promise.all(
+        procedureNodes.map(async (pn) => {
+          try {
+            const res = await getFlowProcedureParameters(
+              pn.procedureName,
+              pn.dbSource,
+              pn.connectionId,
+              pn.schema
+            );
+            if (res.success && res.data) {
+              return res.data
+                .filter((p: any) => p.mode === "OUT" || p.mode === "INOUT")
+                .map((p: any) => ({
+                  name: p.name,
+                  label: `${p.name} (프로시저 반환)`,
+                  sourcePath: pn.sourcePath,
+                }));
+            }
+          } catch (e) {
+            console.error("프로시저 파라미터 조회 실패:", e);
+          }
+          return [];
+        })
+      ).then((extraFieldArrays) => {
+        const extraFields = extraFieldArrays.flat();
+        if (extraFields.length > 0) {
+          console.log(`✅ 프로시저 반환 필드 ${extraFields.length}개 추가 발견`);
+          applyFields([...result.fields, ...extraFields]);
+        }
+      });
+    } else {
+      applyFields(result.fields);
     }
-
-    const uniqueFields = Array.from(fieldMap.values());
-
-    setSourceFields(uniqueFields);
-    setHasRestAPISource(result.hasRestAPI);
-    console.log("✅ 최종 소스 필드 목록:", uniqueFields);
-    console.log("✅ REST API 소스 연결:", result.hasRestAPI);
   }, [nodeId, nodes, edges]);
 
   /**

frontend/components/dataflow/node-editor/panels/properties/ProcedureCallActionProperties.tsx

@@ -0,0 +1,641 @@
+"use client";
+
+/**
+ * 프로시저/함수 호출 노드 속성 편집
+ */
+
+import { useEffect, useState, useCallback } from "react";
+import { Label } from "@/components/ui/label";
+import { Input } from "@/components/ui/input";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import { Card, CardContent } from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
+import { Database, Workflow, RefreshCw, Loader2 } from "lucide-react";
+import { useFlowEditorStore } from "@/lib/stores/flowEditorStore";
+import {
+  getFlowProcedures,
+  getFlowProcedureParameters,
+} from "@/lib/api/flow";
+import { ExternalDbConnectionAPI } from "@/lib/api/externalDbConnection";
+import type { ProcedureCallActionNodeData } from "@/types/node-editor";
+import type { ProcedureListItem, ProcedureParameterInfo } from "@/types/flowExternalDb";
+
+interface ExternalConnection {
+  id: number;
+  connection_name: string;
+  db_type: string;
+}
+
+interface ProcedureCallActionPropertiesProps {
+  nodeId: string;
+  data: ProcedureCallActionNodeData;
+}
+
+export function ProcedureCallActionProperties({
+  nodeId,
+  data,
+}: ProcedureCallActionPropertiesProps) {
+  const { updateNode, nodes, edges } = useFlowEditorStore();
+
+  const [displayName, setDisplayName] = useState(
+    data.displayName || "프로시저 호출"
+  );
+  const [dbSource, setDbSource] = useState<"internal" | "external">(
+    data.dbSource || "internal"
+  );
+  const [connectionId, setConnectionId] = useState<number | undefined>(
+    data.connectionId
+  );
+  const [procedureName, setProcedureName] = useState(
+    data.procedureName || ""
+  );
+  const [procedureSchema, setProcedureSchema] = useState(
+    data.procedureSchema || "public"
+  );
+  const [callType, setCallType] = useState<"procedure" | "function">(
+    data.callType || "function"
+  );
+  const [parameters, setParameters] = useState(data.parameters || []);
+
+  const [connections, setConnections] = useState<ExternalConnection[]>([]);
+  const [procedures, setProcedures] = useState<ProcedureListItem[]>([]);
+  const [loadingProcedures, setLoadingProcedures] = useState(false);
+  const [loadingParams, setLoadingParams] = useState(false);
+  const [sourceFields, setSourceFields] = useState<
+    Array<{ name: string; label?: string }>
+  >([]);
+
+  // 이전 노드에서 소스 필드 목록 수집 (재귀)
+  useEffect(() => {
+    const getUpstreamFields = (
+      targetId: string,
+      visited = new Set<string>()
+    ): Array<{ name: string; label?: string }> => {
+      if (visited.has(targetId)) return [];
+      visited.add(targetId);
+
+      const inEdges = edges.filter((e) => e.target === targetId);
+      const parentNodes = nodes.filter((n) =>
+        inEdges.some((e) => e.source === n.id)
+      );
+      const fields: Array<{ name: string; label?: string }> = [];
+
+      for (const pNode of parentNodes) {
+        if (
+          pNode.type === "tableSource" ||
+          pNode.type === "externalDBSource"
+        ) {
+          const nodeFields =
+            (pNode.data as any).fields ||
+            (pNode.data as any).outputFields ||
+            [];
+          if (Array.isArray(nodeFields)) {
+            for (const f of nodeFields) {
+              const name =
+                typeof f === "string"
+                  ? f
+                  : f.name || f.columnName || f.field;
+              if (name) {
+                fields.push({
+                  name,
+                  label: f.label || f.columnLabel || name,
+                });
+              }
+            }
+          }
+        } else if (pNode.type === "dataTransform") {
+          const upper = getUpstreamFields(pNode.id, visited);
+          fields.push(...upper);
+          const transforms = (pNode.data as any).transformations;
+          if (Array.isArray(transforms)) {
+            for (const t of transforms) {
+              if (t.targetField) {
+                fields.push({
+                  name: t.targetField,
+                  label: t.targetFieldLabel || t.targetField,
+                });
+              }
+            }
+          }
+        } else if (pNode.type === "formulaTransform") {
+          const upper = getUpstreamFields(pNode.id, visited);
+          fields.push(...upper);
+          const transforms = (pNode.data as any).transformations;
+          if (Array.isArray(transforms)) {
+            for (const t of transforms) {
+              if (t.outputField) {
+                fields.push({
+                  name: t.outputField,
+                  label: t.outputFieldLabel || t.outputField,
+                });
+              }
+            }
+          }
+        } else {
+          fields.push(...getUpstreamFields(pNode.id, visited));
+        }
+      }
+
+      return fields;
+    };
+
+    const collected = getUpstreamFields(nodeId);
+    const unique = Array.from(
+      new Map(collected.map((f) => [f.name, f])).values()
+    );
+    setSourceFields(unique);
+  }, [nodeId, nodes, edges]);
+
+  useEffect(() => {
+    setDisplayName(data.displayName || "프로시저 호출");
+    setDbSource(data.dbSource || "internal");
+    setConnectionId(data.connectionId);
+    setProcedureName(data.procedureName || "");
+    setProcedureSchema(data.procedureSchema || "public");
+    setCallType(data.callType || "function");
+    setParameters(data.parameters || []);
+  }, [data]);
+
+  // 외부 DB 연결 목록 조회
+  useEffect(() => {
+    if (dbSource === "external") {
+      ExternalDbConnectionAPI.getConnections({ is_active: "true" })
+        .then((list) =>
+          setConnections(
+            list.map((c: any) => ({
+              id: c.id,
+              connection_name: c.connection_name,
+              db_type: c.db_type,
+            }))
+          )
+        )
+        .catch(console.error);
+    }
+  }, [dbSource]);
+
+  const updateNodeData = useCallback(
+    (updates: Partial<ProcedureCallActionNodeData>) => {
+      updateNode(nodeId, { ...data, ...updates });
+    },
+    [nodeId, data, updateNode]
+  );
+
+  // 프로시저 목록 조회
+  const fetchProcedures = useCallback(async () => {
+    if (dbSource === "external" && !connectionId) return;
+    setLoadingProcedures(true);
+    try {
+      const res = await getFlowProcedures(
+        dbSource,
+        connectionId,
+        procedureSchema || undefined
+      );
+      if (res.success && res.data) {
+        setProcedures(res.data);
+      }
+    } catch (e) {
+      console.error("프로시저 목록 조회 실패:", e);
+    } finally {
+      setLoadingProcedures(false);
+    }
+  }, [dbSource, connectionId, procedureSchema]);
+
+  // dbSource/connectionId 변경 시 프로시저 목록 자동 조회
+  useEffect(() => {
+    if (dbSource === "internal" || (dbSource === "external" && connectionId)) {
+      fetchProcedures();
+    }
+  }, [dbSource, connectionId, fetchProcedures]);
+
+  // 프로시저 선택 시 파라미터 조회
+  const handleProcedureSelect = useCallback(
+    async (name: string) => {
+      setProcedureName(name);
+
+      const selected = procedures.find((p) => p.name === name);
+      const newCallType =
+        selected?.type === "PROCEDURE" ? "procedure" : "function";
+      setCallType(newCallType);
+
+      updateNodeData({
+        procedureName: name,
+        callType: newCallType,
+        procedureSchema,
+      });
+
+      setLoadingParams(true);
+      try {
+        const res = await getFlowProcedureParameters(
+          name,
+          dbSource,
+          connectionId,
+          procedureSchema || undefined
+        );
+        if (res.success && res.data) {
+          const newParams = res.data.map((p: ProcedureParameterInfo) => ({
+            name: p.name,
+            dataType: p.dataType,
+            mode: p.mode,
+            source: "record_field" as const,
+            field: "",
+            value: "",
+          }));
+          setParameters(newParams);
+          updateNodeData({
+            procedureName: name,
+            callType: newCallType,
+            procedureSchema,
+            parameters: newParams,
+          });
+        }
+      } catch (e) {
+        console.error("파라미터 조회 실패:", e);
+      } finally {
+        setLoadingParams(false);
+      }
+    },
+    [dbSource, connectionId, procedureSchema, procedures, updateNodeData]
+  );
+
+  const handleParamChange = (
+    index: number,
+    field: string,
+    value: string
+  ) => {
+    const newParams = [...parameters];
+    (newParams[index] as any)[field] = value;
+    setParameters(newParams);
+    updateNodeData({ parameters: newParams });
+  };
+
+  return (
+    <div className="space-y-4 p-4">
+      {/* 표시명 */}
+      <div className="space-y-2">
+        <Label className="text-xs font-medium">표시명</Label>
+        <Input
+          value={displayName}
+          onChange={(e) => {
+            setDisplayName(e.target.value);
+            updateNodeData({ displayName: e.target.value });
+          }}
+          placeholder="프로시저 호출"
+          className="h-8 text-sm"
+        />
+      </div>
+
+      {/* DB 소스 */}
+      <div className="space-y-2">
+        <Label className="text-xs font-medium">DB 소스</Label>
+        <Select
+          value={dbSource}
+          onValueChange={(v: "internal" | "external") => {
+            setDbSource(v);
+            setConnectionId(undefined);
+            setProcedureName("");
+            setParameters([]);
+            setProcedures([]);
+            updateNodeData({
+              dbSource: v,
+              connectionId: undefined,
+              connectionName: undefined,
+              procedureName: "",
+              parameters: [],
+            });
+          }}
+        >
+          <SelectTrigger className="h-8 text-sm">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="internal">내부 DB (PostgreSQL)</SelectItem>
+            <SelectItem value="external">외부 DB</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
+
+      {/* 외부 DB 연결 선택 */}
+      {dbSource === "external" && (
+        <div className="space-y-2">
+          <Label className="text-xs font-medium">외부 DB 연결</Label>
+          <Select
+            value={connectionId?.toString() || ""}
+            onValueChange={(v) => {
+              const id = parseInt(v);
+              setConnectionId(id);
+              setProcedureName("");
+              setParameters([]);
+              const conn = connections.find((c) => c.id === id);
+              updateNodeData({
+                connectionId: id,
+                connectionName: conn?.connection_name,
+                procedureName: "",
+                parameters: [],
+              });
+            }}
+          >
+            <SelectTrigger className="h-8 text-sm">
+              <SelectValue placeholder="연결 선택" />
+            </SelectTrigger>
+            <SelectContent>
+              {connections.map((c) => (
+                <SelectItem key={c.id} value={c.id.toString()}>
+                  {c.connection_name} ({c.db_type})
+                </SelectItem>
+              ))}
+            </SelectContent>
+          </Select>
+        </div>
+      )}
+
+      {/* 스키마 */}
+      <div className="space-y-2">
+        <Label className="text-xs font-medium">스키마</Label>
+        <div className="flex gap-2">
+          <Input
+            value={procedureSchema}
+            onChange={(e) => setProcedureSchema(e.target.value)}
+            onBlur={() => {
+              updateNodeData({ procedureSchema });
+              fetchProcedures();
+            }}
+            placeholder="public"
+            className="h-8 text-sm"
+          />
+          <Button
+            variant="outline"
+            size="sm"
+            className="h-8 w-8 shrink-0 p-0"
+            onClick={fetchProcedures}
+            disabled={loadingProcedures}
+          >
+            {loadingProcedures ? (
+              <Loader2 className="h-3 w-3 animate-spin" />
+            ) : (
+              <RefreshCw className="h-3 w-3" />
+            )}
+          </Button>
+        </div>
+      </div>
+
+      {/* 프로시저 선택 */}
+      <div className="space-y-2">
+        <Label className="text-xs font-medium">프로시저/함수 선택</Label>
+        {loadingProcedures ? (
+          <div className="flex items-center gap-2 rounded border p-2 text-xs text-gray-500">
+            <Loader2 className="h-3 w-3 animate-spin" />
+            목록 조회 중...
+          </div>
+        ) : (
+          <Select
+            value={procedureName}
+            onValueChange={handleProcedureSelect}
+          >
+            <SelectTrigger className="h-8 text-sm">
+              <SelectValue placeholder="프로시저 선택" />
+            </SelectTrigger>
+            <SelectContent>
+              {procedures.map((p) => (
+                <SelectItem key={`${p.schema}.${p.name}`} value={p.name}>
+                  <div className="flex items-center gap-2">
+                    <span
+                      className={`rounded px-1 py-0.5 text-[10px] font-medium ${
+                        p.type === "FUNCTION"
+                          ? "bg-cyan-100 text-cyan-700"
+                          : "bg-violet-100 text-violet-700"
+                      }`}
+                    >
+                      {p.type === "FUNCTION" ? "FN" : "SP"}
+                    </span>
+                    <span className="font-mono text-xs">{p.name}</span>
+                  </div>
+                </SelectItem>
+              ))}
+              {procedures.length === 0 && (
+                <SelectItem value="" disabled>
+                  프로시저가 없습니다
+                </SelectItem>
+              )}
+            </SelectContent>
+          </Select>
+        )}
+      </div>
+
+      {/* 호출 타입 */}
+      {procedureName && (
+        <div className="space-y-2">
+          <Label className="text-xs font-medium">호출 타입</Label>
+          <Select
+            value={callType}
+            onValueChange={(v: "procedure" | "function") => {
+              setCallType(v);
+              updateNodeData({ callType: v });
+            }}
+          >
+            <SelectTrigger className="h-8 text-sm">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="function">SELECT (함수)</SelectItem>
+              <SelectItem value="procedure">CALL (프로시저)</SelectItem>
+            </SelectContent>
+          </Select>
+        </div>
+      )}
+
+      {/* 파라미터 매핑 */}
+      {procedureName && parameters.length > 0 && (
+        <div className="space-y-3">
+          {loadingParams ? (
+            <div className="flex items-center gap-2 rounded border p-2 text-xs text-gray-500">
+              <Loader2 className="h-3 w-3 animate-spin" />
+              파라미터 조회 중...
+            </div>
+          ) : (
+            <>
+              {/* IN 파라미터 */}
+              {parameters.filter((p) => p.mode === "IN" || p.mode === "INOUT")
+                .length > 0 && (
+                <div className="space-y-2">
+                  <Label className="flex items-center gap-1.5 text-xs font-medium">
+                    <span className="rounded bg-blue-100 px-1.5 py-0.5 text-[10px] text-blue-700">
+                      IN
+                    </span>
+                    입력 파라미터
+                  </Label>
+                  <div className="space-y-2">
+                    {parameters.map((param, idx) => {
+                      if (param.mode !== "IN" && param.mode !== "INOUT")
+                        return null;
+                      return (
+                        <Card key={idx} className="bg-gray-50">
+                          <CardContent className="space-y-2 p-3">
+                            <div className="flex items-center justify-between">
+                              <span className="font-mono text-xs font-medium">
+                                {param.name}
+                              </span>
+                              <span className="rounded bg-gray-200 px-1.5 py-0.5 text-[10px]">
+                                {param.dataType}
+                              </span>
+                            </div>
+                            <Select
+                              value={param.source}
+                              onValueChange={(v) =>
+                                handleParamChange(idx, "source", v)
+                              }
+                            >
+                              <SelectTrigger className="h-7 text-xs">
+                                <SelectValue />
+                              </SelectTrigger>
+                              <SelectContent>
+                                <SelectItem value="record_field">
+                                  레코드 필드
+                                </SelectItem>
+                                <SelectItem value="static">고정값</SelectItem>
+                                <SelectItem value="step_variable">
+                                  스텝 변수
+                                </SelectItem>
+                              </SelectContent>
+                            </Select>
+                            {param.source === "record_field" &&
+                              (sourceFields.length > 0 ? (
+                                <Select
+                                  value={param.field || ""}
+                                  onValueChange={(v) =>
+                                    handleParamChange(idx, "field", v)
+                                  }
+                                >
+                                  <SelectTrigger className="h-7 text-xs">
+                                    <SelectValue placeholder="필드 선택" />
+                                  </SelectTrigger>
+                                  <SelectContent>
+                                    {sourceFields.map((f) => (
+                                      <SelectItem
+                                        key={f.name}
+                                        value={f.name}
+                                      >
+                                        <span className="font-mono text-xs">
+                                          {f.name}
+                                        </span>
+                                        {f.label && f.label !== f.name && (
+                                          <span className="ml-1 text-[10px] text-gray-400">
+                                            ({f.label})
+                                          </span>
+                                        )}
+                                      </SelectItem>
+                                    ))}
+                                  </SelectContent>
+                                </Select>
+                              ) : (
+                                <Input
+                                  value={param.field || ""}
+                                  onChange={(e) =>
+                                    handleParamChange(
+                                      idx,
+                                      "field",
+                                      e.target.value
+                                    )
+                                  }
+                                  placeholder="컬럼명 (이전 노드를 먼저 연결하세요)"
+                                  className="h-7 text-xs"
+                                />
+                              ))}
+                            {param.source === "static" && (
+                              <Input
+                                value={param.value || ""}
+                                onChange={(e) =>
+                                  handleParamChange(
+                                    idx,
+                                    "value",
+                                    e.target.value
+                                  )
+                                }
+                                placeholder="고정값 입력"
+                                className="h-7 text-xs"
+                              />
+                            )}
+                            {param.source === "step_variable" && (
+                              <Input
+                                value={param.field || ""}
+                                onChange={(e) =>
+                                  handleParamChange(
+                                    idx,
+                                    "field",
+                                    e.target.value
+                                  )
+                                }
+                                placeholder="변수명"
+                                className="h-7 text-xs"
+                              />
+                            )}
+                          </CardContent>
+                        </Card>
+                      );
+                    })}
+                  </div>
+                </div>
+              )}
+
+              {/* OUT 파라미터 (반환 필드) */}
+              {parameters.filter((p) => p.mode === "OUT" || p.mode === "INOUT")
+                .length > 0 && (
+                <div className="space-y-2">
+                  <Label className="flex items-center gap-1.5 text-xs font-medium">
+                    <span className="rounded bg-green-100 px-1.5 py-0.5 text-[10px] text-green-700">
+                      OUT
+                    </span>
+                    반환 필드
+                    <span className="text-[10px] font-normal text-gray-400">
+                      (다음 노드에서 사용 가능)
+                    </span>
+                  </Label>
+                  <div className="rounded-md border border-green-200 bg-green-50 p-2">
+                    <div className="space-y-1">
+                      {parameters
+                        .filter(
+                          (p) => p.mode === "OUT" || p.mode === "INOUT"
+                        )
+                        .map((param, idx) => (
+                          <div
+                            key={idx}
+                            className="flex items-center justify-between rounded bg-white px-2 py-1.5"
+                          >
+                            <span className="font-mono text-xs font-medium text-green-700">
+                              {param.name}
+                            </span>
+                            <span className="rounded bg-gray-100 px-1.5 py-0.5 text-[10px] text-gray-500">
+                              {param.dataType}
+                            </span>
+                          </div>
+                        ))}
+                    </div>
+                  </div>
+                </div>
+              )}
+            </>
+          )}
+        </div>
+      )}
+
+      {/* 안내 메시지 */}
+      <Card className="bg-violet-50">
+        <CardContent className="p-3 text-xs text-violet-700">
+          <div className="mb-1 flex items-center gap-1 font-medium">
+            <Workflow className="h-3 w-3" />
+            프로시저 실행 안내
+          </div>
+          <p>
+            이 노드에 연결된 이전 노드의 데이터가 프로시저의 입력 파라미터로
+            전달됩니다. 프로시저 실행이 실패하면 전체 트랜잭션이 롤백됩니다.
+          </p>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}

frontend/components/dataflow/node-editor/panels/properties/UpdateActionProperties.tsx

@@ -17,6 +17,7 @@ import { cn } from "@/lib/utils";
 import { useFlowEditorStore } from "@/lib/stores/flowEditorStore";
 import { tableTypeApi } from "@/lib/api/screen";
 import { getTestedExternalConnections, getExternalTables, getExternalColumns } from "@/lib/api/nodeExternalConnections";
+import { getFlowProcedureParameters } from "@/lib/api/flow";
 import type { UpdateActionNodeData } from "@/types/node-editor";
 import type { ExternalConnection, ExternalTable, ExternalColumn } from "@/lib/api/nodeExternalConnections";
 
@@ -165,6 +166,13 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
 
   // 연결된 소스 노드에서 필드 가져오기 (재귀적으로 모든 상위 노드 탐색)
   useEffect(() => {
+    const procedureNodes: Array<{
+      procedureName: string;
+      dbSource: "internal" | "external";
+      connectionId?: number;
+      schema?: string;
+    }> = [];
+
     const getAllSourceFields = (
       targetNodeId: string,
       visitedNodes = new Set<string>(),
@@ -310,7 +318,33 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
             foundRestAPI = foundRestAPI || upperResult.hasRestAPI;
           }
         }
-        // 5️⃣ 통과 노드 (조건, 기타 모든 노드): 상위 노드로 계속 탐색
+        // 5️⃣ 프로시저 호출 노드: 상위 필드 + OUT 파라미터 추가
+        else if (node.type === "procedureCallAction") {
+          const upperResult = getAllSourceFields(node.id, visitedNodes);
+          fields.push(...upperResult.fields);
+          foundRestAPI = foundRestAPI || upperResult.hasRestAPI;
+          const nodeData = node.data as any;
+          const procParams = nodeData.parameters;
+          let hasOutParams = false;
+          if (Array.isArray(procParams)) {
+            for (const p of procParams) {
+              if (p.mode === "OUT" || p.mode === "INOUT") {
+                hasOutParams = true;
+                fields.push({ name: p.name, label: `${p.name} (프로시저 반환)` });
+              }
+            }
+          }
+          if (!hasOutParams && nodeData.procedureName) {
+            procedureNodes.push({
+              procedureName: nodeData.procedureName,
+              dbSource: nodeData.dbSource || "internal",
+              connectionId: nodeData.connectionId,
+              schema: nodeData.procedureSchema || "public",
+            });
+          }
+          fields.push({ name: "_procedureReturn", label: "프로시저 반환값" });
+        }
+        // 6️⃣ 통과 노드 (조건, 기타 모든 노드): 상위 노드로 계속 탐색
         else {
           const upperResult = getAllSourceFields(node.id, visitedNodes);
           fields.push(...upperResult.fields);
@@ -323,11 +357,33 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
 
     const result = getAllSourceFields(nodeId);
 
-    // 중복 제거
-    const uniqueFields = Array.from(new Map(result.fields.map((field) => [field.name, field])).values());
+    const applyFields = (allFields: typeof result.fields) => {
+      const uniqueFields = Array.from(new Map(allFields.map((field) => [field.name, field])).values());
+      setSourceFields(uniqueFields);
+      setHasRestAPISource(result.hasRestAPI);
+    };
 
-    setSourceFields(uniqueFields);
-    setHasRestAPISource(result.hasRestAPI);
+    if (procedureNodes.length > 0) {
+      applyFields(result.fields);
+      Promise.all(
+        procedureNodes.map(async (pn) => {
+          try {
+            const res = await getFlowProcedureParameters(pn.procedureName, pn.dbSource, pn.connectionId, pn.schema);
+            if (res.success && res.data) {
+              return res.data
+                .filter((p: any) => p.mode === "OUT" || p.mode === "INOUT")
+                .map((p: any) => ({ name: p.name, label: `${p.name} (프로시저 반환)` }));
+            }
+          } catch (e) { console.error("프로시저 파라미터 조회 실패:", e); }
+          return [];
+        })
+      ).then((extraFieldArrays) => {
+        const extraFields = extraFieldArrays.flat();
+        if (extraFields.length > 0) applyFields([...result.fields, ...extraFields]);
+      });
+    } else {
+      applyFields(result.fields);
+    }
   }, [nodeId, nodes, edges]);
 
   const loadTables = async () => {

frontend/components/dataflow/node-editor/panels/properties/UpsertActionProperties.tsx

@@ -17,6 +17,7 @@ import { cn } from "@/lib/utils";
 import { useFlowEditorStore } from "@/lib/stores/flowEditorStore";
 import { tableTypeApi } from "@/lib/api/screen";
 import { getTestedExternalConnections, getExternalTables, getExternalColumns } from "@/lib/api/nodeExternalConnections";
+import { getFlowProcedureParameters } from "@/lib/api/flow";
 import type { UpsertActionNodeData } from "@/types/node-editor";
 import type { ExternalConnection, ExternalTable, ExternalColumn } from "@/lib/api/nodeExternalConnections";
 
@@ -148,6 +149,13 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
 
   // 연결된 소스 노드에서 필드 가져오기 (재귀적으로 모든 상위 노드 탐색)
   useEffect(() => {
+    const procedureNodes: Array<{
+      procedureName: string;
+      dbSource: "internal" | "external";
+      connectionId?: number;
+      schema?: string;
+    }> = [];
+
     const getAllSourceFields = (
       targetNodeId: string,
       visitedNodes = new Set<string>(),
@@ -293,7 +301,33 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
             foundRestAPI = foundRestAPI || upperResult.hasRestAPI;
           }
         }
-        // 5️⃣ 통과 노드 (조건, 기타 모든 노드): 상위 노드로 계속 탐색
+        // 5️⃣ 프로시저 호출 노드: 상위 필드 + OUT 파라미터 추가
+        else if (node.type === "procedureCallAction") {
+          const upperResult = getAllSourceFields(node.id, visitedNodes);
+          fields.push(...upperResult.fields);
+          foundRestAPI = foundRestAPI || upperResult.hasRestAPI;
+          const nodeData = node.data as any;
+          const procParams = nodeData.parameters;
+          let hasOutParams = false;
+          if (Array.isArray(procParams)) {
+            for (const p of procParams) {
+              if (p.mode === "OUT" || p.mode === "INOUT") {
+                hasOutParams = true;
+                fields.push({ name: p.name, label: `${p.name} (프로시저 반환)` });
+              }
+            }
+          }
+          if (!hasOutParams && nodeData.procedureName) {
+            procedureNodes.push({
+              procedureName: nodeData.procedureName,
+              dbSource: nodeData.dbSource || "internal",
+              connectionId: nodeData.connectionId,
+              schema: nodeData.procedureSchema || "public",
+            });
+          }
+          fields.push({ name: "_procedureReturn", label: "프로시저 반환값" });
+        }
+        // 6️⃣ 통과 노드 (조건, 기타 모든 노드): 상위 노드로 계속 탐색
         else {
           const upperResult = getAllSourceFields(node.id, visitedNodes);
           fields.push(...upperResult.fields);
@@ -306,11 +340,33 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
 
     const result = getAllSourceFields(nodeId);
 
-    // 중복 제거
-    const uniqueFields = Array.from(new Map(result.fields.map((field) => [field.name, field])).values());
+    const applyFields = (allFields: typeof result.fields) => {
+      const uniqueFields = Array.from(new Map(allFields.map((field) => [field.name, field])).values());
+      setSourceFields(uniqueFields);
+      setHasRestAPISource(result.hasRestAPI);
+    };
 
-    setSourceFields(uniqueFields);
-    setHasRestAPISource(result.hasRestAPI);
+    if (procedureNodes.length > 0) {
+      applyFields(result.fields);
+      Promise.all(
+        procedureNodes.map(async (pn) => {
+          try {
+            const res = await getFlowProcedureParameters(pn.procedureName, pn.dbSource, pn.connectionId, pn.schema);
+            if (res.success && res.data) {
+              return res.data
+                .filter((p: any) => p.mode === "OUT" || p.mode === "INOUT")
+                .map((p: any) => ({ name: p.name, label: `${p.name} (프로시저 반환)` }));
+            }
+          } catch (e) { console.error("프로시저 파라미터 조회 실패:", e); }
+          return [];
+        })
+      ).then((extraFieldArrays) => {
+        const extraFields = extraFieldArrays.flat();
+        if (extraFields.length > 0) applyFields([...result.fields, ...extraFields]);
+      });
+    } else {
+      applyFields(result.fields);
+    }
   }, [nodeId, nodes, edges]);
 
   // 🔥 외부 커넥션 로딩 함수

frontend/components/dataflow/node-editor/sidebar/nodePaletteConfig.ts

@@ -132,6 +132,14 @@ export const NODE_PALETTE: NodePaletteItem[] = [
     category: "external",
     color: "#06B6D4", // 시안
   },
+  {
+    type: "procedureCallAction",
+    label: "프로시저 호출",
+    icon: "",
+    description: "DB 프로시저/함수를 호출합니다",
+    category: "external",
+    color: "#8B5CF6", // 보라색
+  },
 
   // ========================================================================
   // 유틸리티