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CodeRabbit
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You're basically creating an expression language: https://github.com/expr-lang/expr
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I’m currently playing with PostgreSQL, foreign data wrappers, and pgrx rust extensions. My development experience has been surprisingly smooth and enjoyable.
My main issue is that joins will be processed locally, so all the foreign data will be fetched before the join happens. But otherwise basic CRUD is easy.
https://wiki.postgresql.org/wiki/Foreign_data_wrappers
https://github.com/pgcentralfoundation/pgrx
https://github.com/supabase/wrappers
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I’m currently playing with PostgreSQL, foreign data wrappers, and pgrx rust extensions. My development experience has been surprisingly smooth and enjoyable.
My main issue is that joins will be processed locally, so all the foreign data will be fetched before the join happens. But otherwise basic CRUD is easy.
https://wiki.postgresql.org/wiki/Foreign_data_wrappers
https://github.com/pgcentralfoundation/pgrx
https://github.com/supabase/wrappers
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It actually works! Here's the code on GH: https://github.com/seisvelas/Sea-Quill
Sadly, I stopped working on it after only 1 or 2 weekends because I switched professions to cybersecurity and had too much to learn - every weekend thereafter was CTFs or bug bounties.
Oh well! Someday I'd like to write a more intuitive, "conventional" style language for Urbit, maybe called HoonScript or something. So my affection for Racket's language oriented programming will (maybe, one day) not be in vain!
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> What you have listed is not an actual solution, just a list of things you'd need to solve it
Sorry. HN comments is a narrow channel and so I elected not to try to squeeze a full-blown actual solution through it.
> I could say the only thing you need for the DSL to SQL solution is a programming language, my list would be one item
Well...I enumerated the features of the language I'm using just as you could enumerate the features of your programming language. My list could have one item just as easily as yours can: "PostgreSQL DDL"
> how to test this is a valid question as well
My answer to that question has been to use pgTAP for testing and postgresql_faker to generate synthetic data
https://pgtap.org/
https://gitlab.com/dalibo/postgresql_faker
> My tests also don't require a database to with data in it to test
No, but they do require a runtime, be it in Scala or whatever. That's no different from my case where my test runtime is an ephemeral PostgreSQL database.
> Do you have an example of how this works if you are performing joins between tables?
You bet.
https://asciinema.org/a/629243
> Does every table need to have some sort of user id in it directly for that to work?
It's common for single-database multi-tenant data models to add something like a "tenant_id" to every table. It's simple, more efficient, and more foolproof. You can however just join to other tables in the policy condition as I have done. Extra care should be taken as discussed in the PostgreSQL docs:
https://www.postgresql.org/docs/current/ddl-rowsecurity.html
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SaaSHub
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