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Signed-off-by: Nicholas Gates <nick@nickgates.com>
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Signed-off-by: Nicholas Gates <nick@nickgates.com>
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Merging this PR will not alter performance
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Benchmarks: TPC-H SF=1 on NVMESummary
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Benchmarks: FineWeb NVMeSummary
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Benchmarks: TPC-H SF=1 on S3Summary
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Benchmarks: TPC-DS SF=1 on NVMESummary
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Benchmarks: TPC-H SF=10 on NVMESummary
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Benchmarks: FineWeb S3Summary
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Benchmarks: Statistical and Population GeneticsSummary
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Benchmarks: TPC-H SF=10 on S3Summary
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Benchmarks: Clickbench on NVMESummary
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Signed-off-by: Nicholas Gates <nick@nickgates.com>
Signed-off-by: Nicholas Gates <nick@nickgates.com>
Signed-off-by: Nicholas Gates <nick@nickgates.com>
Signed-off-by: Nicholas Gates <nick@nickgates.com>
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Feb 24, 2026
| // This is used by duckdb whenever there is no projection id in a logical_get node. | ||
| // For some reason we cannot return an empty DataChunk and duckdb will look for the virtual column | ||
| // with this index and create a data chunk with a single vector of that type. | ||
| static EMPTY_COLUMN_IDX: u64 = 18446744073709551614; |
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fun fact: if you cast this to i64, it's -1
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This PR migrates the DuckDB implementation extension over to only using the Scan API.
We create a generic DuckDB table function that operates over any DataSource, and then a specific implementation that takes a path glob and runs a multi-file scan as is the existing behavior.
In the future we can easily add alternate table functions such as creating one from a DataSourceProvider URI, or by passing in a C pointer to a DataSource implementation.