Show HN: I implemented a neural network in SQL

A developer has publicly shared a neural network implemented entirely in SQL, demonstrating that complex machine learning models can be constructed without external libraries or languages. This development, posted on Show HN, highlights an unconventional approach that could influence how AI is integrated into database systems and data workflows.

The developer, whose identity is not specified, detailed the process of building a neural network using only SQL queries and functions. This includes defining layers, activation functions, and training procedures within the constraints of SQL syntax. The project aims to prove that sophisticated AI models can be embedded directly in relational databases, potentially simplifying deployment and data management.

According to the post on Show HN, the implementation was achieved using common SQL features, such as recursive queries and user-defined functions, to simulate the behavior of neural network components. The developer emphasized that this approach is more of a proof of concept than a production-ready solution, but it demonstrates the potential for integrating AI directly into database environments.

Implications for Data-Driven AI Integration

This development matters because it challenges the common practice of separating machine learning models from data storage. Embedding neural networks within SQL could streamline workflows, reduce data transfer overhead, and enable real-time AI processing directly where data resides. It also opens questions about the performance and scalability of such approaches compared to traditional ML frameworks.

Background on SQL and Machine Learning Integration Efforts

Traditionally, machine learning models are built using specialized frameworks like TensorFlow or PyTorch, then deployed separately from databases. Recent efforts have explored integrating AI into database systems, but implementing a neural network solely in SQL is unprecedented. The developer’s post follows a broader trend of attempting to bring AI closer to data sources to improve efficiency and simplify architecture.

Two weeks prior to the posting, the developer was working on a related project involving the GSoC intern and the Xarray-SQL database library, where new features like `to_dataset()` were added. The neural network implementation was a side project but demonstrates the evolving relationship between databases and AI capabilities.

“Building a neural network entirely in SQL is a proof of concept that shows how close data and AI can be integrated without external dependencies.”

— the developer

Performance and Practicality of SQL-Based Neural Networks

It is not yet clear how well this SQL-based neural network performs compared to traditional implementations. The post indicates it is a proof of concept, and questions remain about its scalability, training speed, and suitability for real-world applications. Details on how training data is handled and whether this approach can be extended to larger models are still emerging.

Potential for Optimization and Broader Adoption

Future steps could include benchmarking the SQL neural network against standard frameworks, exploring performance improvements, and possibly developing tools to facilitate similar implementations. The developer or other community members may also experiment with integrating such models into existing database systems or extending the approach to other AI architectures.

Key Questions

Is this implementation practical for real-world use?

Currently, this is a proof of concept. Its practicality depends on performance benchmarks and scalability tests, which are not yet available.

Can this approach be used for large neural networks?

It is unlikely at this stage, as SQL-based implementations may face significant limitations in handling large models efficiently.

What are the advantages of building neural networks in SQL?

Embedding AI directly in databases could reduce data transfer, streamline workflows, and enable real-time processing where data resides.

Will this influence future AI development in databases?

While primarily a proof of concept, it may inspire further research into embedded AI solutions within relational databases.

Source: hn