andygrove commented on code in PR #672:
URL: https://github.com/apache/datafusion-comet/pull/672#discussion_r1682987009
##########
native/core/src/execution/datafusion/planner.rs:
##########
@@ -541,6 +542,24 @@ impl PhysicalPlanner {
Some(self.create_expr(case_when.else_expr.as_ref().unwrap(), input_schema)?)
}
};
+
+ // optimized path for CASE WHEN predicate THEN expr ELSE null
END
+ if else_phy_expr.is_none() && when_then_pairs.len() == 1 {
Review Comment:
DataFusion PR: https://github.com/apache/datafusion/pull/11534
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