generate-import-fixtures: add TPC-H fixture generation tool #167473

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sravotto:sr8_parquet_fixtures

Commits on Apr 20, 2026

generate-import-fixtures: add extensible fixture generation tool

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generate-import-fixtures: add Parquet output format
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generate-import-fixtures: stream rows in batches to reduce memory

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generate-import-fixtures: add region and nation tables

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generate-import-fixtures: address review feedback

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generate-import-fixtures: add unit tests avro/parquet

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