Musql
Embedded Go SQL with SQLite's dialect, columnar storage and a query JIT
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Teams sitting on climate or scientific arrays can query them with the SQL engines they already know, and the attention demo shows how far that idea stretches.
xarray-sql exposes Xarray datasets, including huge cloud-hosted ones such as ERA5, as relational tables you can query from DataFusion, DuckDB, Polars or any ADBC database, or serve over Arrow Flight SQL. The Show HN was a demo: plain attention written as about 25 lines of SQL, from which companion projects ddx and einfold derive a FlashAttention-style plan. The README is frank that dense tensor work is slower in SQL than native Xarray, and parallel execution is still on the roadmap.
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