trying with just found_typ

src/adapter/src/coord/peek.rs

@@ -317,13 +317,11 @@ pub fn create_fast_path_plan<T: Timestamp>(
         let mut mir = &*dataflow_plan.objects_to_build[0].plan.as_inner_mut();
         if let Some((rows, found_typ)) = mir.as_const() {
             // In the case of a constant, we can return the result now.
-            let recalc_typ = mir.typ();
-            assert_eq!(found_typ, &recalc_typ);
             return Ok(Some(FastPathPlan::Constant(
                 rows.clone()
                     .map(|rows| rows.into_iter().map(|(row, diff)| (row, diff)).collect()),
                 // For best accuracy, we need to recalculate typ.
-                recalc_typ,
+                found_typ,
             )));
         } else {
             // If there is a TopK that would be completely covered by the finishing, then jump