From 393cab820e479a76710d691d1da825079307847a Mon Sep 17 00:00:00 2001
From: taiyang-li <654010905@qq.com>
Date: Wed, 24 Jan 2024 18:48:29 +0800
Subject: [PATCH] add some comment

---
 src/Functions/if.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Functions/if.cpp b/src/Functions/if.cpp
index bb71f3ff1d9..f10b9989f13 100644
--- a/src/Functions/if.cpp
+++ b/src/Functions/if.cpp
@@ -261,7 +261,7 @@ struct NumIfImpl
         auto col_res = ColVecResult::create(size);
         ArrayResult & res = col_res->getData();
 
-        /// TODO 这里是否可避免分支跳转
+        /// TODO cast a and b only once
         for (size_t i = 0; i < size; ++i)
             res[i] = cond[i] ? static_cast<ResultType>(a) : static_cast<ResultType>(b);
         return col_res;
@@ -1185,7 +1185,7 @@ public:
             }
             else
             {
-                /// TODO 这里不物化行不行？
+                /// TODO why materialize condition
                 materialized_cond_col = cond_const_col->convertToFullColumn();
                 cond_col = typeid_cast<const ColumnUInt8 *>(&*materialized_cond_col);
             }