berkaysynnada commented on code in PR #15716:
URL: https://github.com/apache/datafusion/pull/15716#discussion_r2071501942


##########
datafusion/physical-expr/src/intervals/cp_solver.rs:
##########
@@ -645,6 +645,17 @@ impl ExprIntervalGraph {
                 .map(|child| self.graph[*child].interval())
                 .collect::<Vec<_>>();
             let node_interval = self.graph[node].interval();
+            // Special case: true OR could in principle be propagated by 3 
interval sets,
+            // (i.e. left true, or right true, or both true) however we do not 
support this yet.
+            if node_interval == &Interval::CERTAINLY_TRUE
+                && self.graph[node]
+                    .expr
+                    .as_any()
+                    .downcast_ref::<BinaryExpr>()
+                    .is_some_and(|expr| expr.op() == &Operator::Or)
+            {
+                return not_impl_err!("OR operator cannot yet propagate true 
intervals");
+            }

Review Comment:
   Rather than error, this case should go to 
`PropagationResult::CannotPropagate`, if any child is true, or 
`PropagationResult::Infeasible` if both of them is false



##########
datafusion/physical-expr/src/intervals/cp_solver.rs:
##########
@@ -645,6 +645,17 @@ impl ExprIntervalGraph {
                 .map(|child| self.graph[*child].interval())
                 .collect::<Vec<_>>();
             let node_interval = self.graph[node].interval();
+            // Special case: true OR could in principle be propagated by 3 
interval sets,
+            // (i.e. left true, or right true, or both true) however we do not 
support this yet.
+            if node_interval == &Interval::CERTAINLY_TRUE
+                && self.graph[node]
+                    .expr
+                    .as_any()
+                    .downcast_ref::<BinaryExpr>()
+                    .is_some_and(|expr| expr.op() == &Operator::Or)
+            {
+                return not_impl_err!("OR operator cannot yet propagate true 
intervals");
+            }

Review Comment:
   Rather than error, this case should go to 
`PropagationResult::CannotPropagate`, if any child is true, or 
`PropagationResult::Infeasible` if both of them are false



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