Use case:

This relates to crate/crate#11020

It would allow users to use the function in a default clause of a primary key column. This would enable use-cases as mentioned in the issue with libraries like dataset

This function would return text instead of uuid

Environment

• VerneMQ Version: 1.11.0
• OS:
  Distributor ID: Ubuntu
  Description: Ubuntu 18.04.5 LTS
  Release: 18.04
  Codename: bionic
• Erlang/OTP version (if building from source): 19
• VerneMQ configuration (vernemq.conf) or the changes from the default
• Cluster size/standalone:

Expected behaviour

Connection to Redis server running on unixsocket, configured within Lua scr