# arrayDistinctString

Returns unique values in an array of strings.

## Signature

> arrayDistinctString('colName')

## Usage Examples

These examples are based on the [Hybrid Quick Start](https://docs.pinot.apache.org/release-0.10.0/basics/getting-started/quick-start#hybrid).

```sql
select DivTailNums, 
       arrayDistinctString(DivTailNums) AS unique
from airlineStats 
WHERE arraylength(DivTailNums) >= 2
limit 5
```

| DivTailNums   | unique |
| ------------- | ------ |
| N7713A,N7713A | N7713A |
| N344AA,N344AA | N344AA |
| N344AA,N344AA | N344AA |
| N7713A,N7713A | N7713A |