_Dist_constraint_tree.Logic_operation
| Description | Name can be given here and the function in _Function_detail means the node does not have logic information. |
| Details: | |
| Parent saveframe | distance_constraints |
| Data type | code |
| DB table | Dist_constraint_tree |
| DB column | Logic_operation |
| DB type | VARCHAR(15) |
| NULL allowed | yes |