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TechAscent illustrates how DuckDB's high-performance vectorized SQL engine can now be leveraged from Clojure via tech.ml.dataset (TMD), enabling large out-of-memory joins and 50GB CSV ingestion that compresses to 18GB in about two minutes.
Flatiron is a pure Clojure columnar analytics library for in-memory tables with a SQL-like DSL, designed for performance with primitive arrays and batch processing.