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/). 

# MD5 function
<a name="r_MD5"></a>

Uses the MD5 cryptographic hash function to convert a variable-length string into a 32-character string that is a text representation of the hexadecimal value of a 128-bit checksum. 

## Syntax
<a name="r_MD5-syntax"></a>

```
MD5(string)
```

## Arguments
<a name="r_MD5-arguments"></a>

 *string*   
A variable-length string.

## Return type
<a name="r_MD5-return-type"></a>

The MD5 function returns a 32-character string that is a text representation of the hexadecimal value of a 128-bit checksum.

## Examples
<a name="r_MD5-examples"></a>

The following example shows the 128-bit value for the string 'Amazon Redshift': 

```
select md5('Amazon Redshift');
md5
----------------------------------
f7415e33f972c03abd4f3fed36748f7a
(1 row)
```