From ed95e210ff99d9d29938fb25cd41255b3d9eb517 Mon Sep 17 00:00:00 2001
From: smallkun <smallerkun@foxmail.com>
Date: Thu, 20 Feb 2025 16:58:46 +0800
Subject: [PATCH] Auto commit

---
 2208/练习（一）.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/2208/练习（一）.md b/2208/练习（一）.md
index 5cd4f3a..d712104 100644
--- a/2208/练习（一）.md
+++ b/2208/练习（一）.md
@@ -110,7 +110,21 @@ DELETE FROM booktype
 WHERE type_id = 1;
 ```
 
+**更新图书**
 
+将图书表的图书备注更新成作者名 备注的组合
+
+```sql
+/*
+更新
+UPDATE 表名
+SET 字段名=新值
+WHERE 条件;
+*/
+#将图书表的图书备注更新成作者名 备注的组合
+UPDATE book
+SET book_remark = CONCAT(book_author,' ',book_remark);
+```
 
 ## MySQL查询