> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sdf.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Math Functions

## `checksum`

*Supported Signatures*

```sql theme={null}
function checksum(varchar) returns bigint
```

[🔗 Official Documentation](https://docs.aws.amazon.com/redshift/latest/dg/r_CHECKSUM.html)

## `is_integer`

*Supported Signatures*

```sql theme={null}
function is_integer(super) returns boolean
```

[🔗 Official Documentation](https://docs.aws.amazon.com/redshift/latest/dg/r_is_integer.html)