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Mike SeddonAndy Grove
e1b38cdaa4f
Mike Seddon authored and Andy Grove committed b07489bf708
ARROW-10712: [Rust] [DataFusion] Add tests to TPC-H benchmarks

This PR adds the ability to load and parse the expected query answers included in the https://github.com/databricks/tpch-dbgen/tree/master/answers repository - which users have to clone anyway to generate the TPC-H data.

Currently DataFusion does not support Decimal types which all the numeric values in TPC-H are so there are the expected precision errors in the current results. These tests are still useful as they show some interesting results already such as non-deterministic query 5 results.

@andygrove

Closes #9015 from seddonm1/test-tpch

Authored-by: Mike Seddon <seddonm1@gmail.com>
Signed-off-by: Andy Grove <andygrove73@gmail.com>