From 7079b4c885656fba788400002f012d3ff43e01de Mon Sep 17 00:00:00 2001
From: Maksim Kita <kitaetoya@gmail.com>
Date: Thu, 8 Jun 2023 12:40:16 +0300
Subject: [PATCH] ReverseTransform small improvement

---
 src/Processors/Transforms/ReverseTransform.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Processors/Transforms/ReverseTransform.cpp b/src/Processors/Transforms/ReverseTransform.cpp
index 98f2bf54aa5..66b774ab50d 100644
--- a/src/Processors/Transforms/ReverseTransform.cpp
+++ b/src/Processors/Transforms/ReverseTransform.cpp
@@ -6,11 +6,11 @@ namespace DB
 
 void ReverseTransform::transform(Chunk & chunk)
 {
-    IColumn::Permutation permutation;
-
     size_t num_rows = chunk.getNumRows();
+    IColumn::Permutation permutation(num_rows);
+
     for (size_t i = 0; i < num_rows; ++i)
-        permutation.emplace_back(num_rows - 1 - i);
+        permutation[i] = num_rows - 1 - i;
 
     auto columns = chunk.detachColumns();