From f89a759c189148fa3f3396f6d6b558423f11ef41 Mon Sep 17 00:00:00 2001
From: Julian Mundhahs <julian.mundhahs@gmail.com>
Date: Sun, 27 Oct 2024 19:33:52 +0100
Subject: [PATCH] expand comment

---
 src/engine/Server.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/engine/Server.cpp b/src/engine/Server.cpp
index c82ac1555a..0e2443a0da 100644
--- a/src/engine/Server.cpp
+++ b/src/engine/Server.cpp
@@ -601,7 +601,9 @@ Awaitable<void> Server::executeUpdate(
   };
   std::vector<IdTriple<>> toInsert;
   std::vector<IdTriple<>> toDelete;
-  // Expected result size is size(query result) x num template rows.
+  // The maximum result size is size(query result) x num template rows. The
+  // actual result can be smaller if there are template rows with variables for
+  // which a result row does not have a value.
   toInsert.reserve(res->idTable().size() * toInsertTemplates.size());
   toDelete.reserve(res->idTable().size() * toDeleteTemplates.size());
   for (const auto& [pair, range] :