test: add PostgreSQL TPC-H integration tests#855

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bestbeforetoday:tpch-reference-tests

Commits on Jun 8, 2026

feat(isthmus): add PostgreSQL TPC-H integration testing

nielspardon
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Commits on Jun 9, 2026

Commits on Jun 10, 2026

test: better PostgreSqlIntegrationTest failure reporting
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Commits on Jun 11, 2026

test: assert expected TPC-H integration test fails
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