Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# IS\$1ARRAY function
<a name="r_is_array"></a>

Checks whether a variable is an array. The function returns `true` if the variable is an array. The function also includes empty arrays. Otherwise, the function returns `false` for all other values, including null.

## Syntax
<a name="r_is_array-synopsis"></a>

```
IS_ARRAY(super_expression)
```

## Arguments
<a name="r_is_array-arguments"></a>

*super\$1expression*  
A `SUPER` expression or column.

## Return type
<a name="r_is_array-returns"></a>

`BOOLEAN`

## Examples
<a name="r_is_array_example"></a>

To check if `[1,2]` is an array using the IS\$1ARRAY function, use the following example.

```
SELECT IS_ARRAY(JSON_PARSE('[1,2]'));

+----------+
| is_array |
+----------+
| true     |
+----------+
```