liukun4515 commented on code in PR #3301:
URL: https://github.com/apache/arrow-datafusion/pull/3301#discussion_r959031892


##########
datafusion/physical-expr/src/planner.rs:
##########
@@ -83,6 +83,84 @@ pub fn create_physical_expr(
                 }
             }
         }
+        Expr::IsTrue(expr) => {
+            let binary_op = binary_expr(
+                expr.as_ref().clone(),
+                Operator::IsNotDistinctFrom,
+                Expr::Literal(ScalarValue::Boolean(Some(true))),
+            );
+            create_physical_expr(
+                &binary_op,
+                input_dfschema,
+                input_schema,
+                execution_props,
+            )
+        }
+        Expr::IsNotTrue(expr) => {
+            let binary_op = binary_expr(
+                expr.as_ref().clone(),
+                Operator::IsDistinctFrom,
+                Expr::Literal(ScalarValue::Boolean(Some(true))),
+            );
+            create_physical_expr(
+                &binary_op,
+                input_dfschema,
+                input_schema,
+                execution_props,
+            )
+        }
+        Expr::IsFalse(expr) => {
+            let binary_op = binary_expr(
+                expr.as_ref().clone(),
+                Operator::IsNotDistinctFrom,
+                Expr::Literal(ScalarValue::Boolean(Some(false))),
+            );
+            create_physical_expr(
+                &binary_op,
+                input_dfschema,
+                input_schema,
+                execution_props,
+            )
+        }
+        Expr::IsNotFalse(expr) => {
+            let binary_op = binary_expr(
+                expr.as_ref().clone(),
+                Operator::IsDistinctFrom,
+                Expr::Literal(ScalarValue::Boolean(Some(false))),
+            );
+            create_physical_expr(
+                &binary_op,
+                input_dfschema,
+                input_schema,
+                execution_props,
+            )
+        }
+        Expr::IsUnknown(expr) => {

Review Comment:
   Maybe we can do this in the follow-up pr.



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