From c5fb86b9651d3ca4be459a62ac160b3ea4cecff2 Mon Sep 17 00:00:00 2001
From: Lee Gaupeng <471045913@qq.com>
Date: Sat, 13 Apr 2019 23:03:32 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E4=BA=86=20=E7=BB=8F?=
 =?UTF-8?q?=E5=85=B8=E7=BB=83=E4=B9=A0=E9=A2=98.sql=20=E7=AC=AC19=E9=A2=98?=
 =?UTF-8?q?=E7=9A=84=E9=94=99=E8=AF=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 other/sql 经典练习题.sql | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/other/sql 经典练习题.sql b/other/sql 经典练习题.sql
index a4b4f964..da1ac09b 100644
--- a/other/sql 经典练习题.sql	
+++ b/other/sql 经典练习题.sql	
@@ -203,10 +203,10 @@ ORDER BY RANK;
 -- 19、查询选修“3-105”课程的成绩高于“109”号同学成绩的所有同学的记录。
 select *
 from SCORE
-where CNO = '3-105' and DEGREE > ALL (
+where CNO = '3-105' and DEGREE > (
   select DEGREE
   from SCORE
-  where SNO = '109'
+  where SNO = '109' and CNO = '3-105'
 );
 
 set @@global.sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';