diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 0c808b2766abfee0a39ec1c6662744b8dd36096d..a66f8b093b89bca7f3add6c027ad89a9da3291bb 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -11,8 +11,7 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="f606bdfa-94c3-4eb6-9db3-7fb30f22bd38" name="Default Changelist" comment="首次提交">
-      <change afterPath="$PROJECT_DIR$/sql/345200.jpg" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/sql/微信截图_20210312162312.png" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/sql/微信图片_20210312165040.jpg" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
     </list>
@@ -75,7 +74,7 @@
       <workItem from="1614758864696" duration="12602000" />
       <workItem from="1614909080390" duration="1335000" />
       <workItem from="1615174077797" duration="24000" />
-      <workItem from="1615537187326" duration="343000" />
+      <workItem from="1615537187326" duration="1627000" />
     </task>
     <task id="LOCAL-00001" summary="首次提交">
       <created>1614759833695</created>
@@ -147,7 +146,14 @@
       <option name="project" value="LOCAL" />
       <updated>1614825310541</updated>
     </task>
-    <option name="localTasksCounter" value="11" />
+    <task id="LOCAL-00011" summary="首次提交">
+      <created>1615537812898</created>
+      <option name="number" value="00011" />
+      <option name="presentableId" value="LOCAL-00011" />
+      <option name="project" value="LOCAL" />
+      <updated>1615537812898</updated>
+    </task>
+    <option name="localTasksCounter" value="12" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -170,9 +176,9 @@
     <option name="LAST_COMMIT_MESSAGE" value="首次提交" />
   </component>
   <component name="WindowStateProjectService">
-    <state x="552" y="252" key="Vcs.Push.Dialog.v2" timestamp="1614825312697">
+    <state x="552" y="252" key="Vcs.Push.Dialog.v2" timestamp="1615537832114">
       <screen x="0" y="0" width="1920" height="1040" />
     </state>
-    <state x="552" y="252" key="Vcs.Push.Dialog.v2/0.0.1920.1040@0.0.1920.1040" timestamp="1614825312697" />
+    <state x="552" y="252" key="Vcs.Push.Dialog.v2/0.0.1920.1040@0.0.1920.1040" timestamp="1615537832114" />
   </component>
 </project>
\ No newline at end of file
diff --git a/README.md b/README.md
index 9f3a66d2868b2ff1ea7887ea25c38bd1abe6574e..f04ce9f2423d55fa840706d9a14e3f5d44ac5d34 100644
--- a/README.md
+++ b/README.md
@@ -13,11 +13,13 @@
 
 
 # 腾讯云服务器限时优惠活动
+ [【腾讯云】云产品限时秒杀，爆款1核2G云服务器，首年99元，点击直达](https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=0dc53892c213f8acbb68182fbbf23a66&from=console)
 ![image](sql/345200.jpg)
 ![image](sql/微信截图_20210312162312.png)
  [【腾讯云】云产品限时秒杀，爆款1核2G云服务器，首年99元，点击直达](https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=0dc53892c213f8acbb68182fbbf23a66&from=console)
 
-
+## 特别说明
+   只要从以上链接购买腾讯云服务器用户，永久提供技术支持服务！
 
 
 ## 一、项目概述
@@ -206,24 +208,8 @@ hp-jx
   
 
 
-## 统计学生考勤信息
-SELECT class_id,teacher_id,attendance_datetime,classroom,lesson,sum(attendancenum) as attendancenum ,sum(studentnum)  as studentnum  from  
-(
-SELECT class_id,teacher_id,attendance_datetime,classroom,lesson,count(0) as studentnum,0 as attendancenum
-from teach_attendance ta
-join teach_student_attendance tsa on
-ta.attendance_id = tsa.attendance_id 
--- WHERE DATEDIFF(ta.attendance_datetime,NOW())=-1
-GROUP BY  ta.class_id,ta.lesson,ta.teacher_id
-UNION  
-select class_id,teacher_id,attendance_datetime,classroom,lesson,0 as studentnum,count(attendance) as attendancenum  from teach_attendance ta
-join teach_student_attendance tsa on
-ta.attendance_id = tsa.attendance_id 
-where tsa.attendance = '1'
--- and DATEDIFF(ta.attendance_datetime,NOW())=-1
-GROUP BY  ta.class_id,ta.lesson,ta.teacher_id
-) a 
-GROUP BY  a.class_id,a.teacher_id,a.attendance_datetime,a.classroom,a.lesson
+## 提供全方位技术支持服务！请作者喝杯茶！
+![image](sql/微信图片_20210312165040.jpg)
 
 
 
diff --git "a/sql/\345\276\256\344\277\241\345\233\276\347\211\207_20210312165040.jpg" "b/sql/\345\276\256\344\277\241\345\233\276\347\211\207_20210312165040.jpg"
new file mode 100644
index 0000000000000000000000000000000000000000..d8fb9a31ca80ce89b17c77213c8897bd7431ed0e
Binary files /dev/null and "b/sql/\345\276\256\344\277\241\345\233\276\347\211\207_20210312165040.jpg" differ