解决下载报错

performance/Performance.Repository/PerforReportRepository .cs

@@ -432,6 +432,8 @@ public List<dynamic> QueryComputeByDate(string viewName, DateTime beginTime, Dat
 
             sql = $"select {string.Join(",", groupBy)}, {string.Join(",", sumBy.Select(t => $"sum({t}) {t}"))} from ({sql}) tab group by {string.Join(",", groupBy)}";
 
+            sql = $@" select 0 as count;{sql}";
+
             if (pageNumber != 0 && pageSize != 0)
                 sql = $@" select count(1) count from ({sql}) tab;
                 {sql} limit {pageSize} offset {(pageNumber - 1)};";