From b4948c8a755862fa0c2af9d455672acee3931090 Mon Sep 17 00:00:00 2001
From: mba1398 <26516464+mba1398@users.noreply.github.com>
Date: Wed, 2 Feb 2022 23:33:04 +0800
Subject: [PATCH] =?UTF-8?q?Update=20ch04:=20=E9=9B=86=E5=90=88=E8=BF=90?=
 =?UTF-8?q?=E7=AE=97.md?=
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---
 ch04: 集合运算.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ch04: 集合运算.md b/ch04: 集合运算.md
index 9864675..c357760 100644
--- a/ch04: 集合运算.md	
+++ b/ch04: 集合运算.md	
@@ -1160,4 +1160,4 @@ SELECT SP.shop_id
 
 # **4.5** 
 
-用关联子查询实现：在 product 表中，取出 product_id, produc_name, slae_price, 并按照商品的售价从低到高进行排序、对售价进行累计求和。
+用关联子查询实现：在 product 表中，取出 product_id, product_name, sale_price, 并按照商品的售价从低到高进行排序、对售价进行累计求和。