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Update 10-function.md

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Ganlin Zhao 2023-06-28 16:10:04 +08:00 committed by GitHub
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docs/en/12-taos-sql/10-function.md
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@ -1050,7 +1050,7 @@ TOP(expr, k)
UNIQUE(expr)
```
**Description**: The values that occur the first time in the specified column. The effect is similar to `distinct` keyword, but it can also be used to match tags or timestamp which correspond to first occurrence of the record.
**Description**: The values that occur the first time in the specified column. The effect is similar to `distinct` keyword.
**Return value type**:Same as the data type of the column being operated upon