fixed no data bug in filtering

csst_dag/dag/_base_dag.py

@@ -87,6 +87,12 @@ class BaseDAG:
             keys=self.pattern.colnames,
             join_type="inner",
         )
+        if len(filtered_data_basis) == 0:
+            print(">>> Input plan basis:")
+            plan_basis.pprint()
+            print(">>> Input data basis:")
+            data_basis.pprint()
+            raise ValueError("No data found for the given pattern.")
         u_data_basis = table.unique(filtered_data_basis["dataset", "obs_id"])
         if len(u_data_basis) == 0:
             filtered_plan_basis = plan_basis[:0]