数据保存类型 年级大于等于0

TEAMModelOS/Controllers/Syllabus/VolumeController.cs

@@ -248,7 +248,7 @@ namespace TEAMModelOS.Controllers
                     else if (request.scope.Equals("school")
                         && !string.IsNullOrEmpty(request.periodId)
                         && !string.IsNullOrEmpty(request.subjectId)
-                        && request.gradeId>0
+                        && request.gradeId>=0
                         && !string.IsNullOrEmpty(request.semesterId))
                     {
                         sql.Append($" and c.periodId = '{request.periodId}' and  c.subjectId = '{request.subjectId}'" +