Update SerializationString.cpp

ClickHouse · Dec 12, 2023 · 6cab012 · 6cab012
1 parent 6b1acf7
commit 6cab012
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/DataTypes/Serializations/SerializationString.cpp b/src/DataTypes/Serializations/SerializationString.cpp
@@ -152,6 +152,7 @@ template <int UNROLL_TIMES>
 static NO_INLINE void deserializeBinarySSE2(ColumnString::Chars & data, ColumnString::Offsets & offsets, ReadBuffer & istr, size_t limit)
 {
     size_t offset = data.size();
+    /// Avoiding calling resize in a loop improves the performance.
     data.resize(std::max(data.capacity(), static_cast<size_t>(4096)));
 
     for (size_t i = 0; i < limit; ++i)