perf: search result (#5608)

packages/service/core/workflow/dispatch/dataset/search.ts

@@ -268,7 +268,9 @@ export async function dispatchDatasetSearch(
       },
       },
       [DispatchNodeResponseKeyEnum.nodeResponse]: responseData,
       [DispatchNodeResponseKeyEnum.nodeResponse]: responseData,
       nodeDispatchUsages,
       nodeDispatchUsages,
-      [DispatchNodeResponseKeyEnum.toolResponses]: {
+      [DispatchNodeResponseKeyEnum.toolResponses]:
+        searchRes.length > 0
+          ? {
               prompt: getDatasetSearchToolResponsePrompt(),
               prompt: getDatasetSearchToolResponsePrompt(),
               cites: searchRes.map((item) => ({
               cites: searchRes.map((item) => ({
                 id: item.id,
                 id: item.id,
@@ -277,6 +279,7 @@ export async function dispatchDatasetSearch(
                 content: `${item.q}\n${item.a}`.trim()
                 content: `${item.q}\n${item.a}`.trim()
               }))
               }))
             }
             }
+          : 'No results'
     };
     };
   } catch (error) {
   } catch (error) {
     return getNodeErrResponse({ error });
     return getNodeErrResponse({ error });