jackwener commented on code in PR #4316:
URL: https://github.com/apache/arrow-datafusion/pull/4316#discussion_r1028816313
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datafusion/core/src/physical_optimizer/optimizer.rs:
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@@ -36,4 +36,10 @@ pub trait PhysicalOptimizerRule {
/// A human readable name for this optimizer rule
fn name(&self) -> &str;
+
+ /// A flag to indicate whether the physical planner should valid the rule
will not
+ /// change the schema of the plan after the rewriting.
+ /// Some of the optimization rules might change the nullable properties of
the schema
+ /// and should disable the schema check.
+ fn schema_check(&self) -> bool;
Review Comment:
👍
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