diff --git a/boot-service/src/main/java/com/xwbing/demo/oracle/day03.sql b/boot-service/src/main/java/com/xwbing/demo/oracle/day03.sql
index 6e08d3f..4e67218 100644
--- a/boot-service/src/main/java/com/xwbing/demo/oracle/day03.sql
+++ b/boot-service/src/main/java/com/xwbing/demo/oracle/day03.sql
@@ -54,7 +54,7 @@ desc：降序
 select ename ,sal from emp_xwbing order by sal;
 select ename ,sal,deptno from emp_xwbing order by deptno,sal desc;
 select ename from emp_xwbing order by ename;
-order by field(字段,'','');
+order by field(字段,'','');//mysql
 
 
 聚合函数又称多行函数：用来统计结果的