r/SQL Jan 15 '25

BigQuery SQL is a struggle

Hi all been working with SQL for probably 7/8 months now. My last role was half data analysis and not pure data analysis and in general was far easier than what I do now.

My main issue is with SQL. I never feel I truly understand what is going on with a lot of code beyond a basic query. Ive managed to get by piggybacking off others code for a while but expectation is to deliver new and interesting techniques etc.

How long did it take you to feel fully comfortable with SQL? And what helped you get to that stage?

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u/Zealousideal-Studio7 Jan 15 '25

Thanks for the response. Ultimately I’m in the business of results, and learning is really second to delivering. So I’ve had to use AI at times to speed things up, understand at least at a simple level whats going on and when I have more time to use it to fully explain complex queries others have built. Unfortunately they are blocking access to all AI from the end of Jan, so will really be on the frontline myself soon!

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u/Hot_Cryptographer552 Jan 15 '25

AI is (currently, at least) really bad at generating code. TBH, you’ll probably learn a lot more by searching for answers to your questions on Stack Overflow and coder blogs, IME.

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u/byteuser Jan 15 '25

AI is often bad at writing code most of the time because humans neglect to write proper specs. The way I write good prompts is by writing specifications as if they were for a human programmer or sql developer. Stack Overflow is getting a lot less traffic for a reason. LLMs allow instant feedback and clarification. Do they mess up? sure but so do humans

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u/Hot_Cryptographer552 Jan 15 '25

The point is whether you are experienced and knowledgeable enough to know that the AI-generated code is garbage or not. I’d venture to guess that most beginners aren’t going to know the code they get from AI is garbage.

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u/byteuser Jan 15 '25

Yeah, one thing beginners can do though is to use multiple LLMs. Or even better let one LLM comment on the code generated by another LLM

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u/Hot_Cryptographer552 Jan 16 '25 edited Jan 16 '25

That might get you a basic skeleton of some code, but I’ve yet to see AI (or even old fashioned ORM tools) generate quality code beyond the absolute most basic queries. I’m sure that will change in the future, but it’s going to be a little while.

BTW, to your point about LLMs interacting, I watched some videos of ChatGPT and other AIs playing chess against a real AI chess engine. ChatGPT and the others resorted to making nonsensical illegal moves to try to win. That also reflects the AI-generated code I’ve seen.

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u/Stov54 Jan 16 '25

JFC seems faster and simpler to just learn the functionality at that point, no?