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A comment on Comparing SQLite, DuckDB and Arrow with UN trade data. Parent comment

Re:Comparing SQLite, DuckDB and Arrow with UN trade data by beagle3 on Wednesday October 27, 2021 @03:46PM (#29018188)
And in most cases, if you memory map (mmap on Linux/BSD, MapViewOfFile on windows) it’s way faster than reading the file - because you only ever read what’s needed on one hand, and it stays in cache between invocations.
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