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://amazonaws-china.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# IS\$1SCALAR function
<a name="r_is_scalar"></a>

Checks whether a variable is a scalar. The IS\$1SCALAR function returns `true` for any value that is not an array or an object. The function returns `false` for any other values, including null.

The set of IS\$1ARRAY, IS\$1OBJECT, and IS\$1SCALAR cover all values except nulls.

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

```
IS_SCALAR(super_expression)
```

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

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

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

`BOOLEAN`

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

To check if `{"name": "Joe"}` is a scalar using the IS\$1SCALAR function, use the following example.

```
CREATE TABLE t(s SUPER);

INSERT INTO t VALUES (JSON_PARSE('{"name": "Joe"}'));

SELECT s, IS_SCALAR(s.name) FROM t;

+----------------+-----------+
|       s        | is_scalar |
+----------------+-----------+
| {"name":"Joe"} | true      |
+----------------+-----------+
```