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Show HN: I implemented a neural network in SQL
11–20 of 26 posts
Re: Show HN: I implemented a neural network in SQL
#12Neat! Feels analogous to "X runs Doom" demos (but NN).
Totally. I can’t wait to take this to https://hytradboi.com
Re: Show HN: I implemented a neural network in SQL
#13[deleted]
Re: Show HN: I implemented a neural network in SQL
#14Neat! Feels analogous to "X runs Doom" demos (but NN).
Just today I saw this implementation of DOOM in SQLite using a recursive CTE for a simple ray tracer: https://github.com/petergpt/doomql
Re: Show HN: I implemented a neural network in SQL
#15I've been working on something similar, implementing a relational language on top of a tensor library[0].
Mathematically, einsum and database joins are the same thing, just over different semirings (real numbers for einsum, booleans for databases). A lot of papers about datalog explore this sort of thing in more depth. In particular, Dyna[1] might be interesting.
[0]: https://arxiv.org/abs/2509.22614 [1]: https://dyna.org/
Re: Show HN: I implemented a neural network in SQL
#16In the past platforms have integrated ML algorithms into relational databases and SQL through extensions (both commercial and open source). A famous open source one was MADlib [1], which has an implementation of neural networks. Even the commercial ones were similar, I used ML algorithms in SQL Server many years ago around 2005 I think.
I am wondering about.. SQL as a declarative structured query language that can be optimized into essentially any kind of distributed, directed acyclic graph of processing - vs the special characteristics of relational databases (relational algebra, relvars, etc. etc.) is an important distinction as - of yet, I see the author linking both together so I'm trying to understand what it is about relational structures that specifically helped here (just not seeing it yet, not that it isn't there).
Also, wondering if ISO/IEC 9075-15:2023 SQL standard for multidimensional arrays (MDA) is of any use here? Paper describing SQL/MDA here [2].
[1] https://madlib.apache.org/documentation.html
[2] https://www.ifis.uni-luebeck.de/~moeller/Lectures/WS-19-20/N...
Re: Show HN: I implemented a neural network in SQL
#17In the past platforms have integrated ML algorithms into relational databases and SQL through extensions (both commercial and open source). A famous open source one was MADlib [1], which has an implementation of neural networks. Even the commercial ones were similar, I used ML algorithms in SQL Server many years ago around 2005 I think. I am wondering about.. SQL as a declarative structured query language that can be…
I need to better understand your first question before I can comment. In theory, we could work with MADlib too -- what we do is port scientific data, which typically is a "tensor" or Nd array, into a tabular view. I believe you know relational theory better than I do, I am still fairly new to the field.
WRT ISO/IEC 9075-15:2023: This is the standard established from rasdaman, IIUC. I reject this approach (which treats arrays as a column type), and instead adopt one inspired by Michael Stonebraker's SciDB (which treats arrays as tables themselves). For an in depth review of the topic, I recommend this NSF paper: https://par.nsf.gov/servlets/purl/10545560
Re: Show HN: I implemented a neural network in SQL
#18Fable is impressed.
Re: Show HN: I implemented a neural network in SQL
#19I'll try it next time I've got Greece vacation money
Re: Show HN: I implemented a neural network in SQL
#20I have done similar as well: https://github.com/seanwevans/pg_gpt2