From 713d29d92aa5cb03e207d5e704bd5ac23fd22fd0 Mon Sep 17 00:00:00 2001 From: shenglian zhou Date: Tue, 19 Dec 2023 08:53:45 +0800 Subject: [PATCH] doc: select tags to retrieve tags --- docs/en/12-taos-sql/06-select.md | 2 +- docs/zh/12-taos-sql/06-select.md | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/en/12-taos-sql/06-select.md b/docs/en/12-taos-sql/06-select.md index f229f0d77b..82acc97491 100755 --- a/docs/en/12-taos-sql/06-select.md +++ b/docs/en/12-taos-sql/06-select.md @@ -182,7 +182,7 @@ The TBNAME pseudocolumn in a supertable contains the names of subtables within t The following SQL statement returns all unique subtable names and locations within the meters supertable: ```mysql -SELECT DISTINCT TBNAME, location FROM meters; +SELECT TAGS TBNAME, location FROM meters; ``` Use the `INS_TAGS` system table in `INFORMATION_SCHEMA` to query the information for subtables in a supertable. For example, the following statement returns the name and tag values for each subtable in the `meters` supertable. diff --git a/docs/zh/12-taos-sql/06-select.md b/docs/zh/12-taos-sql/06-select.md index 1e11019ab9..7f346bd36e 100755 --- a/docs/zh/12-taos-sql/06-select.md +++ b/docs/zh/12-taos-sql/06-select.md @@ -192,7 +192,7 @@ taos> SELECT ts, ts AS primary_key_ts FROM d1001; 获取一个超级表所有的子表名及相关的标签信息： ```mysql -SELECT DISTINCT TBNAME, location FROM meters; +SELECT TAGS TBNAME, location FROM meters; ``` 建议用户使用 INFORMATION_SCHEMA 下的 INS_TAGS 系统表来查询超级表的子表标签信息，例如获取超级表 meters 所有的子表名和标签值：