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fix unique document

This commit is contained in:
Ganlin Zhao 2023-06-28 15:09:42 +08:00
parent c6c5aea406
commit 1a6511fee0
2 changed files with 4 additions and 4 deletions
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4
docs/en/12-taos-sql/10-function.md
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@ -1054,11 +1054,11 @@ TOP(expr, k)
UNIQUE(expr)
```
**Description**: The values that occur the first time in the specified column. The effect is similar to `distinct` keyword, but it can also be used to match tags or timestamp. The first occurrence of a timestamp or tag is used.
**Description**: The values that occur the first time in the specified column. The effect is similar to `distinct` keyword, but it can also be used to match tags or timestamp which correspond to first occurrence of the record.
**Return value type**:Same as the data type of the column being operated upon
**Applicable column types**: Any data types except for timestamp
**Applicable column types**: Any data types
**Applicable table types**: table, STable

4
docs/zh/12-taos-sql/10-function.md
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@ -1046,11 +1046,11 @@ TOP(expr, k)
UNIQUE(expr)
```
**功能说明**：返回该列的数值首次出现的值。该函数功能与 distinct 相似，但是可以匹配标签和时间戳信息。可以针对除时间列以外的字段进行查询，可以匹配标签和时间戳，其中的标签和时间戳是第一次出现时刻的标签和时间戳。
**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，可以匹配标签和时间戳，对应数据第一次出现时刻的标签和时间戳。
**返回数据类型**：同应用的字段。
**适用数据类型**：适合于除时间类型以外的字段。
**适用数据类型**：全部类型字段。
**适用于**: 表和超级表。