Update README.md

Author: QueenieCplusplus

README.md

@@ -1,2 +1,8 @@
 # SQL_Event_Scheduler
 MySQL 事件觸發器
+
+
+    CREATE EVENT < event_name >
+        ON SCHEDULE < EVERY 1 DAY STARTS CURRENT_TIMESTAMP >
+        DO 
+           DELETE FROM `mytable` WHERE `publish_date` /*Event Body*/