* Rewriting queries and also parts of the schema when it turns out the things that made sense in the design phase cause massive bottlenecks once you get more data, or just get it faster, than you tested with.
Of course the good news is now you can run the best RDBMS's on your laptop, or on a $5/mo VPS; or have a small managed one starting at <= $15/mo. Plus ChatGPT can help you remember how to do that inside join. ;-)
You can reach me at nominallyanonymous-at-protonmail-dot-com. From there I’ll give you my “durable” contact info - Slack, Discord, SMS, Signal, Telegram… whatever you use regularly, basically.
I recommend Chris (C.J.) Date’s books.
On a side note, if you have to join 15 tables for a report it is a sign you may go in the wrong direction. In 99% of the cases I never needed more than 5-6 tables if the data is well structured, but that takes years to learn.
I don't know of any modern environment that functions like that, on any platform.
I'm posting this to invite others to either a) correct me and tell me I'm wrong that tooling doesn't matter (a legitimate view, but wrong), and/or b) recommend some modern, OSS Access-like tools that might help flatten the learning curve for you. (And if you're more comfortable with a CLI and a REPL already, then you don't even need this hypothetical tool, but I myself am curious about it.)
EDIT: looks like LibreOffice Base is pretty close to MS Access circa 1997.
* language syntax
* the relational model (relatively easy? It is just "there"?)
* database schema, where I have 3 000 tables, or 50 0000 tables (that's how ERPs are made)
* actualy knowing how to use the language
* building those queries that join columns from 15 different tables together to deliver the needed data -> it sounds easy, but Im struggling to do it better/faster - I never saw a book or website that focuses on that (multiple joins from multiple tables), when it feels my work is is mostly that
* understanding what is needed
* actual "programming" problems (say: you have 100k items on stock, those are parts of BOMs, make a list of 'where used'... yes I know you can google it and try to copy from stockoverflow)
Seriously, I am trying now how to learn how to setup a simple DB to consolidate data (20 csv files on a shareddrive) and the guides are often like in the 'how to draw an owl' meme...
Controlling/reporting/analyst jobs feel in some way as "programmer" but without tools/training/salary - just figuring stuff on your own. Im doing it, but apart from that SQLzoo website I didnt manage to find any decent guide for the 'usual' problems. Also since those are like 10% of my work I cant focus on those problems properly - and try to learn it after work.
Also SQLzoo is a lot like the "how to draw the owl" meme.. the easy tasks are easy, the hard ones are impossible and there are no medium tasks. There also dont seem to ne any real life examples like those tasks like: 'join 15 tables to make some report'.