Details
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Improvement
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Status: In Progress
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Minor
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Resolution: Unresolved
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Impala 3.1.0
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None
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None
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ghx-label-5
Description
The tables in the `functional` db provide many interesting cases. The tables in TPC-H and TPC-DS simulate a well-behaved application.
We also need some tables that show messy, real-world cases:
- Correlated filters (same filter on multiple tables)
- Correlated keys (same join key across multiple tables)
- Extreme data skew
A simple four-table start-schema structure can give us what we want.