回访量统计,排除无回访人的数据

src/Hotline.Api/Controllers/Bi/BiOrderController.cs

@@ -1103,7 +1103,7 @@ namespace Hotline.Api.Controllers.Bi
         {
             var query = _orderVisitRepository.Queryable()
                 .Includes(x => x.Employee)
-                 .Where(x => x.VisitTime >= dto.StartTime && x.VisitTime <= dto.EndTime && x.VisitState == EVisitState.Visited)
+                 .Where(x => x.VisitTime >= dto.StartTime && x.VisitTime <= dto.EndTime && x.VisitState == EVisitState.Visited && x.EmployeeId != "" && x.EmployeeId != null)
                  .WhereIF(!string.IsNullOrEmpty(dto.VisitName), x => x.Employee.Name.Contains(dto.VisitName))
                  .GroupBy(x => new { x.EmployeeId, x.Employee.Name })
                  .Select(x => new VisitMeasureStatisticsModelDto()