Updated Sync ES (markdown)

Sync-ES.md

@@ -213,6 +213,16 @@ left join (select user_id, group_concat(label order by id desc separator ';') as
 objFields:
   labels: array:;
 ```
+- 对象字段
+```
+select a.id as _id, a.name, a.role_id, c.labels, a.c_time, a.description from user a
+```
+配置中使用:
+```
+objFields:
+  description: object
+```
+其中a.description字段内容为json字符串
 - 父子文档索引
 
 es/customer.yml