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@alamb alamb commented Jan 8, 2024

Which issue does this PR close?

Follow on to #8774 / #8735

Rationale for this change

The core issue in #8735 was that one Expr type was forgotten. @haohuaijin restored the extra Expr type ❤️

However, I think there is still some danger than a new Expr type would be added and forgotten to be added to this area. Thus I propose using the standard TreeVisitor to do the recursion

What changes are included in this PR?

Use inspect_expr_pre instead of manual recursion

Are these changes tested?

Covered by existing tests

Are there any user-facing changes?

No

@alamb alamb changed the title Alamb/simplify expr analysis Minor: Use standard tree walk in Projection Pushdown Jan 8, 2024
@github-actions github-actions bot added the optimizer Optimizer rules label Jan 8, 2024
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Thank you @alamb for this great simplify 👍.

@Dandandan Dandandan merged commit f5ca078 into apache:main Jan 9, 2024
@alamb alamb deleted the alamb/simplify_expr_analysis branch January 9, 2024 18:21
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3 participants