From dbdba764dda4dd657ebe5d96924fefdff6e4eb0f Mon Sep 17 00:00:00 2001 From: Jing Sima Date: Mon, 11 Nov 2024 14:14:26 +0800 Subject: [PATCH] docs:[TD-32851] Modify the description of function UNIQUE. --- docs/en/14-reference/03-taos-sql/10-function.md | 2 +- docs/zh/14-reference/03-taos-sql/10-function.md | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/en/14-reference/03-taos-sql/10-function.md b/docs/en/14-reference/03-taos-sql/10-function.md index d2efd668b0..f6c1ef24d0 100644 --- a/docs/en/14-reference/03-taos-sql/10-function.md +++ b/docs/en/14-reference/03-taos-sql/10-function.md @@ -1149,7 +1149,7 @@ TOP(expr, k) UNIQUE(expr) ``` -**Description**: The values that occur the first time in the specified column. The effect is similar to `distinct` keyword. For a table with composite primary key, only the data with the smallest primary key value is returned. +**Description**: Return the unique values of this column. The effect is similar to `distinct` keyword. Return the row with the earliest timestamp for duplicate data. For a table with composite primary key, only the data with the smallest primary key value is returned. **Return value type**:Same as the data type of the column being operated upon diff --git a/docs/zh/14-reference/03-taos-sql/10-function.md b/docs/zh/14-reference/03-taos-sql/10-function.md index bbc6a0b81a..ae256a4ac0 100644 --- a/docs/zh/14-reference/03-taos-sql/10-function.md +++ b/docs/zh/14-reference/03-taos-sql/10-function.md @@ -1988,7 +1988,7 @@ TOP(expr, k) UNIQUE(expr) ``` -**功能说明**：返回该列数据首次出现的值。该函数功能与 distinct 相似。对于存在复合主键的表的查询，若最小时间戳的数据有多条，则只有对应的复合主键最小的数据被返回。 +**功能说明**：返回该列数据去重后的值。该函数功能与 distinct 相似。对于相同的数据，返回时间戳最小的一条，对于存在复合主键的表的查询，若最小时间戳的数据有多条，则只有对应的复合主键最小的数据被返回。 **返回数据类型**：同应用的字段。