feat(substrait): add wildcard handling to producer #12987
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tokoko
changed the title
alamb
reviewed
Oct 17, 2024
| // Generate PlanRel(s) | ||
| // Note: Only 1 relation tree is currently supported | ||
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| let plan = Arc::new(ExpandWildcardRule::new()) |
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Can we perhaps add a comment explaining why this function call is necessary?
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@alamb thanks. does the ci failure seem flaky to you? Or should I actually run docs update script? |
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Rationale for this change
Current roundtrip tests for wildcard expression pass only because tests themselves optimize the plan beforehand and "optimize" the wildcard away before actually doing a roundtrip. Producer should be able to convert the plan to substrait even if the plan isn't optimized beforehand.
What changes are included in this PR?
ExpandWildcardRuleat the top of the producer. Substrait doesn't have anything analogous to the wildcard, so the easiest solution I found was to run ExpandWildcardRule to work around that. The main thing is that it's run as part of the producer so the producer no longer assumes that full optimizer has been run before.Are these changes tested?
yes
Are there any user-facing changes?
yes, producer can convert wildcard expression independently of the optimizer.