Set multiple unique features in one SQL query for feature extractors#39
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chrjabs wants to merge 2 commits into
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Set multiple unique features in one SQL query for feature extractors#39chrjabs wants to merge 2 commits into
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Udopia
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Jul 14, 2026
…d lots of manual adaptions after the latest version bump)
Udopia
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Ports the batched multi-value write path contributed by Christoph Jabs (@chrjabs, #39) to the current schema. Adapted to the Polars-based query interface and the config-driven registry introduced in 5.1.0: unique features are written in a single INSERT ... ON CONFLICT statement, while non-unique features are written individually. This cuts bulk-write time from roughly 20 min to 40 s on large batches. Co-authored-by: Christoph Jabs <christoph.jabs@helsinki.fi>
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I noticed that running the
wcnfbasefeature extractor took a long time even after the features had already been extracted for all instances. Turns out writing the features one by one into the database is really inefficient.With this PR the
set_valuesmethods ofDatabaseandSchemanow take dicts of multiple values and write as much as possible in one SQL query. I'm not sure I fully understand the schema for non-unique features, so I tried to not modify the logic there.This made a
wcnfbasefeature extraction run for me go from ~20 minutes to 40 seconds.