From f745fc259db7281307c46d39f2808bb17a9d1510 Mon Sep 17 00:00:00 2001
From: "g.verdier" <g.verdier@criteo.com>
Date: Mon, 18 Aug 2025 21:58:20 +0200
Subject: [PATCH] Avoid parsing twice X-ClickHouse-Summary

---
 ClickHouse.Driver/ADO/ClickHouseCommand.cs | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/ClickHouse.Driver/ADO/ClickHouseCommand.cs b/ClickHouse.Driver/ADO/ClickHouseCommand.cs
index fc01535..e8a3765 100644
--- a/ClickHouse.Driver/ADO/ClickHouseCommand.cs
+++ b/ClickHouse.Driver/ADO/ClickHouseCommand.cs
@@ -259,11 +259,9 @@ private static QueryStats ExtractQueryStats(HttpResponseMessage response)
         try
         {
             const string summaryHeader = "X-ClickHouse-Summary";
-            if (response.Headers.Contains(summaryHeader))
+            if (response.Headers.TryGetValues(summaryHeader, out var values))
             {
-                var value = response.Headers.GetValues(summaryHeader).FirstOrDefault();
-                var jsonDoc = JsonDocument.Parse(value);
-                return JsonSerializer.Deserialize<QueryStats>(value, SummarySerializerOptions);
+                return JsonSerializer.Deserialize<QueryStats>(values.First(), SummarySerializerOptions);
             }
         }
         catch