diff --git a/docs/en/12-taos-sql/06-select.md b/docs/en/12-taos-sql/06-select.md
index 1fc6fb7e67..0cd2d06989 100755
--- a/docs/en/12-taos-sql/06-select.md
+++ b/docs/en/12-taos-sql/06-select.md
@@ -24,7 +24,7 @@ SELECT [hints] [DISTINCT] [TAGS] select_list
 hints: /*+ [hint([hint_param_list])] [hint([hint_param_list])] */
 
 hint:
-    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP
+    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP | PARA_TABLES_SORT
 
 select_list:
     select_expr [, select_expr] ...
@@ -87,12 +87,13 @@ Hints are a means of user control over query optimization for individual stateme
 
 The list of currently supported Hints is as follows:
 
-|    **Hint**   |    **Params**  |         **Comment**        |       **Scopt**            |
+|    **Hint**   |    **Params**  |         **Comment**        |       **Scope**            |
 | :-----------: | -------------- | -------------------------- | -----------------------------------|
 | BATCH_SCAN    | None           | Batch table scan           | JOIN statment for stable           |
 | NO_BATCH_SCAN | None           | Sequential table scan      | JOIN statment for stable           |
 | SORT_FOR_GROUP| None           | Use sort for partition, conflict with PARTITION_FIRST     | With normal column in partition by list |
 | PARTITION_FIRST| None          | Use Partition before aggregate, conflict with SORT_FOR_GROUP | With normal column in partition by list |
+| PARA_TABLES_SORT| None         | When sorting the supertable rows by timestamp, No temporary disk space is used | Sorting the supertable rows by timestamp  |
 
 For example:
 
@@ -100,6 +101,7 @@ For example:
 SELECT /*+ BATCH_SCAN() */ a.ts FROM stable1 a, stable2 b where a.tag0 = b.tag0 and a.ts = b.ts;
 SELECT /*+ SORT_FOR_GROUP() */ count(*), c1 FROM stable1 PARTITION BY c1;
 SELECT /*+ PARTITION_FIRST() */ count(*), c1 FROM stable1 PARTITION BY c1;
+SELECT /*+ PARA_TABLES_SORT() */ * from stable1 order by ts;
 ```
 
 ## Lists
diff --git a/docs/zh/12-taos-sql/06-select.md b/docs/zh/12-taos-sql/06-select.md
index 2a7dff6f7d..43b32efe32 100755
--- a/docs/zh/12-taos-sql/06-select.md
+++ b/docs/zh/12-taos-sql/06-select.md
@@ -24,7 +24,7 @@ SELECT [hints] [DISTINCT] [TAGS] select_list
 hints: /*+ [hint([hint_param_list])] [hint([hint_param_list])] */
 
 hint:
-    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP
+    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP | PARA_TABLES_SORT
 
 select_list:
     select_expr [, select_expr] ...
@@ -93,13 +93,14 @@ Hints 是用户控制单个语句查询优化的一种手段，当 Hint 不适
 | NO_BATCH_SCAN | 无             | 采用顺序读表的方式         | 超级表 JOIN 语句             |
 | SORT_FOR_GROUP| 无             | 采用sort方式进行分组, 与PARTITION_FIRST冲突  | partition by 列表有普通列时  |
 | PARTITION_FIRST| 无             | 在聚合之前使用PARTITION计算分组, 与SORT_FOR_GROUP冲突 | partition by 列表有普通列时  |
-
+| PARA_TABLES_SORT| 无             | 超级表的数据按时间戳排序时, 不使用临时磁盘空间, 只使用内存 | 超级表的数据按时间戳排序时  |
 举例： 
 
 ```sql
 SELECT /*+ BATCH_SCAN() */ a.ts FROM stable1 a, stable2 b where a.tag0 = b.tag0 and a.ts = b.ts;
 SELECT /*+ SORT_FOR_GROUP() */ count(*), c1 FROM stable1 PARTITION BY c1;
 SELECT /*+ PARTITION_FIRST() */ count(*), c1 FROM stable1 PARTITION BY c1;
+SELECT /*+ PARA_TABLES_SORT() */ * from stable1 order by ts;
 ```
 
 ## 列表