Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, 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/) that was published on June 30, 2025. 

# Hash functions
<a name="hash-functions"></a>

**Topics**
+ [CHECKSUM function](r_CHECKSUM.md)
+ [farmFingerprint64 function](r_FARMFINGERPRINT64.md)
+ [FUNC\_SHA1 function](FUNC_SHA1.md)
+ [FNV\_HASH function](r_FNV_HASH.md)
+ [MD5 function](r_MD5.md)
+ [SHA function](SHA.md)
+ [SHA1 function](SHA1.md)
+ [SHA2 function](SHA2.md)
+ [MURMUR3\_32\_HASH](MURMUR3_32_HASH.md)

A hash function is a mathematical function that converts a numerical input value into another value.