From 3a3bb594e4973223ddb3cf43069795dcd1e39d6f Mon Sep 17 00:00:00 2001
From: Mars Liu <mars.liu@outlook.com>
Date: Mon, 6 Feb 2023 14:40:21 +0800
Subject: [PATCH] fixed a typo

---
 .../4.EXISTS/exists.md"                            | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git "a/data/2.MySQL\344\270\255\351\230\266/5.\345\255\220\346\237\245\350\257\242/4.EXISTS/exists.md" "b/data/2.MySQL\344\270\255\351\230\266/5.\345\255\220\346\237\245\350\257\242/4.EXISTS/exists.md"
index 9753b51..bb12cc3 100644
--- "a/data/2.MySQL\344\270\255\351\230\266/5.\345\255\220\346\237\245\350\257\242/4.EXISTS/exists.md"
+++ "b/data/2.MySQL\344\270\255\351\230\266/5.\345\255\220\346\237\245\350\257\242/4.EXISTS/exists.md"
@@ -24,12 +24,12 @@ create table employee(
 ## 答案
 
 ```sql
-select id, name, dept
+select id, name, dept_id
 from employee as o
 where not exists(
     select * 
     from employee as i 
-    where o.dept = i.dept and post='assistant'); 
+    where o.dept_id = i.dept_id and post='assistant'); 
 ```
 
 ## 选项
@@ -37,17 +37,17 @@ where not exists(
 ### A
 
 ```sql
-select id, name, dept
+select id, name, dept_id
 from employee as o
 where exists(
     select * 
     from employee as i 
-    where o.dept = i.dept and post='assistant'); 
+    where o.dept_id = i.dept_id and post='assistant'); 
 ```
 
 ### B
 ```sql
-select id, name, dept 
+select id, name, dept_id 
 from employee as o
 where 'assistant' != exists(
     select post 
@@ -57,10 +57,10 @@ where 'assistant' != exists(
 ### C
 
 ```sql
-select id, name, dept 
+select id, name, dept_id 
 from employee as o
 where 'assistant' = not exists(
     select post 
     from employee as i 
-    where o.dept = i.dept); 
+    where o.dept_id = i.dept_id); 
 ```
\ No newline at end of file
-- 
GitLab