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spiraldb / vortex

An extensible, state-of-the-art columnar file format
https://vortex.dev
Apache License 2.0
1.01k stars 28 forks source link

Report constant columns back to DataFusion as EquivalenceProperties constant_exprs #1507

Open gatesn opened 3 days ago

gatesn commented 3 days ago

Small optimization, probably not often hit, but if an entire column is constant, then DataFusion will perform constant evaluation over expressions referencing this.