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\_SMALLINT function
<a name="r_is_smallint"></a>

Checks whether a variable is a `SMALLINT`. The IS\_SMALLINT function returns `true` for numbers of scale 0 in the 16-bit range. The function returns `false` for any other values, including null and floating point numbers.

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

```
IS_SMALLINT(super_expression)
```

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

*super\_expression*  
A `SUPER` expression or column.

## Return
<a name="r_is_smallint-returns"></a>

`BOOLEAN`

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

To check if `5` is a `SMALLINT` using the IS\_SMALLINT function, use the following example.

```
CREATE TABLE t(s SUPER);

INSERT INTO t VALUES (5);

SELECT s, IS_SMALLINT(s) FROM t;

+---+-------------+
| s | is_smallint |
+---+-------------+
| 5 | true        |
+---+-------------+
```