Applying custom functions directly in GROQ to destructure data in Sanity.io.

HI all, I'm wondering if is there any way apply function to destructure data like hour, year etc. directly in GROQ something like this:

Any gists or ideas as

datetime()

doesn't explain much. It is more about using custom function directly in GROQ to return values I need . Or there is no way to apply such functionality and I have to process data when I receive these from Sanity?

No, that sort of thing will need to be handled wherever you’re consuming your data.

Thank you , All sorted with utility functions.