From 8c012befcd90cb1ade0069f501bfb40b35fbd94a Mon Sep 17 00:00:00 2001
From: jyf111 <64510284+jyf111@users.noreply.github.com>
Date: Tue, 16 Jan 2024 22:11:43 +0800
Subject: [PATCH] Update string-functions.md

polish sentence
---
 functions-and-operators/string-functions.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/functions-and-operators/string-functions.md b/functions-and-operators/string-functions.md
index d659b9677cd12..092e8550ceb17 100644
--- a/functions-and-operators/string-functions.md
+++ b/functions-and-operators/string-functions.md
@@ -170,7 +170,7 @@ This function is the same as the two-argument version of [`LOCATE(substr, str)`]
 
 > **Note:**
 >
-> `INSTR(str, substr)` is case sensitive since [TiDB uses binary collations by default](/character-set-and-collation.md), which differs from MySQL.
+> `INSTR(str, substr)` is case-sensitive by default, since [TiDB defaults to using binary collations](/character-set-and-collation.md), which differs from MySQL.
 
 - If either argument is a number, the function treats the number as a string.
 - If `substr` is not in `str`, the function returns 0; otherwise, it returns the index of the first occurrence