# Change field names in arrays using `CAST`
<a name="changing-row-arrays-with-cast"></a>

To change the field name in an array that contains `ROW` values, you can `CAST` the `ROW` declaration:

```
WITH dataset AS (
  SELECT
    CAST(
      ROW('Bob', 38) AS ROW(name VARCHAR, age INTEGER)
    ) AS users
)
SELECT * FROM dataset
```

This query returns:

```
+--------------------+
| users              |
+--------------------+
| {NAME=Bob, AGE=38} |
+--------------------+
```

**Note**  
In the example above, you declare `name` as a `VARCHAR` because this is its type in Presto. If you declare this `STRUCT` inside a `CREATE TABLE` statement, use `String` type because Hive defines this data type as `String`.