[NOTICKET] fixed multiple sources

src/api/v1/chat.py

@@ -73,7 +73,7 @@ def _extract_sources(results: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
                 })
         else:
             meta = result["metadata"]
-            key = (meta.get("data", {}).get("document_id"), meta.get("data", {}).get("page_label"))
+            key = (meta.get("data", {}).get("table_name"), meta.get("data", {}).get("column_name"))
             if key not in seen:
                 seen.add(key)
                 table_name = meta.get("data", {}).get("table_name")