Update query_context_processor.py (#17657)

superset/common/query_context_processor.py

@@ -333,6 +333,10 @@ class QueryContextProcessor:
     def get_data(self, df: pd.DataFrame) -> Union[str, List[Dict[str, Any]]]:
         if self._query_context.result_format == ChartDataResultFormat.CSV:
             include_index = not isinstance(df.index, pd.RangeIndex)
+            columns = list(df.columns)
+            verbose_map = self._qc_datasource.data.get("verbose_map", {})
+            if verbose_map:
+                df.columns = [verbose_map.get(column, column) for column in columns]
             result = csv.df_to_escaped_csv(
                 df, index=include_index, **config["CSV_EXPORT"]
             )