From f3147de8deb5484eb6f0c5cdb05bfd0bfcad18f1 Mon Sep 17 00:00:00 2001
From: shenglian zhou <shenglian_zhou@163.com>
Date: Fri, 25 Aug 2023 09:35:59 +0800
Subject: [PATCH 1/3] docs: add tags keyword in select clause

---
 docs/en/12-taos-sql/06-select.md | 10 +++++++++-
 docs/zh/12-taos-sql/06-select.md | 12 +++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/docs/en/12-taos-sql/06-select.md b/docs/en/12-taos-sql/06-select.md
index 0bb1d7dfcd..c6f83976df 100755
--- a/docs/en/12-taos-sql/06-select.md
+++ b/docs/en/12-taos-sql/06-select.md
@@ -9,7 +9,7 @@ description: This document describes how to query data in TDengine.
 ```sql
 SELECT {DATABASE() | CLIENT_VERSION() | SERVER_VERSION() | SERVER_STATUS() | NOW() | TODAY() | TIMEZONE()}
 
-SELECT [hints] [DISTINCT] select_list
+SELECT [hints] [DISTINCT] [TAGS] select_list
     from_clause
     [WHERE condition]
     [partition_by_clause]
@@ -225,6 +225,14 @@ The \_IROWTS pseudocolumn can only be used with INTERP function. This pseudocolu
 select _irowts, interp(current) from meters range('2020-01-01 10:00:00', '2020-01-01 10:30:00') every(1s) fill(linear);
 ```
 
+### TAGS Query
+
+The TAGS keyword returns only tag columns from the child tables when only tag columns are specified. One row containing tag columns is returned for each child table.
+
+```sql
+SELECT TAGS tag_name [, tag_name ...] FROM stb_name
+```
+
 ## Query Objects
 
 `FROM` can be followed by a number of tables or super tables, or can be followed by a sub-query.
diff --git a/docs/zh/12-taos-sql/06-select.md b/docs/zh/12-taos-sql/06-select.md
index cb3e0b86b0..800b26b00e 100755
--- a/docs/zh/12-taos-sql/06-select.md
+++ b/docs/zh/12-taos-sql/06-select.md
@@ -9,7 +9,7 @@ description: 查询数据的详细语法
 ```sql
 SELECT {DATABASE() | CLIENT_VERSION() | SERVER_VERSION() | SERVER_STATUS() | NOW() | TODAY() | TIMEZONE()}
 
-SELECT [hints] [DISTINCT] select_list
+SELECT [hints] [DISTINCT] [TAGS] select_list
     from_clause
     [WHERE condition]
     [partition_by_clause]
@@ -160,6 +160,16 @@ SELECT DISTINCT col_name [, col_name ...] FROM tb_name;
 
 :::
 
+### 标签查询
+
+当查询的列只有标签列时，`TAGS` 关键字可以指定只返回所有子表的标签列。每个子表只返回一行标签列。
+
+返回所有子表的标签列：
+
+```sql
+SELECT TAGS tag_name [, tag_name ...] FROM stb_name
+``` 
+
 ### 结果集列名
 
 `SELECT`子句中，如果不指定返回结果集合的列名，结果集列名称默认使用`SELECT`子句中的表达式名称作为列名称。此外，用户可使用`AS`来重命名返回结果集合中列的名称。例如：

From 7958fdf9adbd82fe796d801487484c0292e1442b Mon Sep 17 00:00:00 2001
From: dapan1121 <72057773+dapan1121@users.noreply.github.com>
Date: Fri, 25 Aug 2023 11:28:01 +0800
Subject: [PATCH 2/3] Update 06-select.md

---
 docs/zh/12-taos-sql/06-select.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/zh/12-taos-sql/06-select.md b/docs/zh/12-taos-sql/06-select.md
index 800b26b00e..49a5cf8f19 100755
--- a/docs/zh/12-taos-sql/06-select.md
+++ b/docs/zh/12-taos-sql/06-select.md
@@ -162,7 +162,7 @@ SELECT DISTINCT col_name [, col_name ...] FROM tb_name;
 
 ### 标签查询
 
-当查询的列只有标签列时，`TAGS` 关键字可以指定只返回所有子表的标签列。每个子表只返回一行标签列。
+当查询的列只有标签列时，`TAGS` 关键字可以指定返回所有子表的标签列。每个子表只返回一行标签列。
 
 返回所有子表的标签列：
 

From 470b37bae45834b90d6b67e13762de091f2b44ef Mon Sep 17 00:00:00 2001
From: dapan1121 <72057773+dapan1121@users.noreply.github.com>
Date: Fri, 25 Aug 2023 11:32:12 +0800
Subject: [PATCH 3/3] Update 06-select.md

---
 docs/en/12-taos-sql/06-select.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/en/12-taos-sql/06-select.md b/docs/en/12-taos-sql/06-select.md
index c6f83976df..687349e31d 100755
--- a/docs/en/12-taos-sql/06-select.md
+++ b/docs/en/12-taos-sql/06-select.md
@@ -227,7 +227,7 @@ select _irowts, interp(current) from meters range('2020-01-01 10:00:00', '2020-0
 
 ### TAGS Query
 
-The TAGS keyword returns only tag columns from the child tables when only tag columns are specified. One row containing tag columns is returned for each child table.
+The TAGS keyword returns only tag columns from all child tables when only tag columns are specified. One row containing tag columns is returned for each child table.
 
 ```sql
 SELECT TAGS tag_name [, tag_name ...] FROM stb_name