diff --git a/src/Jiaowu.Api/Controllers/CourseSelectionsController.cs b/src/Jiaowu.Api/Controllers/CourseSelectionsController.cs
index fc09c89..952dd0f 100644
--- a/src/Jiaowu.Api/Controllers/CourseSelectionsController.cs
+++ b/src/Jiaowu.Api/Controllers/CourseSelectionsController.cs
@@ -85,15 +85,16 @@ public sealed class CourseSelectionsController(
         CancellationToken cancellationToken)
     {
         var source = ApplyEnrollmentFilters(ScopedEnrollments(), query);
-        var students = source.Select(x => new EnrollmentStudentIdentity(
-            x.StudentId, x.Student!.StudentNumber, x.Student.Name,
-            x.Student.AdministrativeClass!.Major!.Name,
-            x.Student.AdministrativeClass.Name, x.Student.AdministrativeClass.Grade));
-        var total = await students.Distinct().CountAsync(cancellationToken);
+        var matchingStudentIds = source.Select(x => x.StudentId).Distinct();
+        var total = await matchingStudentIds.CountAsync(cancellationToken);
         var page = Math.Max(1, query.Page);
         var pageSize = Math.Clamp(query.PageSize, 1, 100);
-        var pageStudents = await students.Distinct()
+        var pageStudents = await db.Students.AsNoTracking()
+            .Where(x => matchingStudentIds.Contains(x.Id))
             .OrderBy(x => x.StudentNumber).Skip((page - 1) * pageSize).Take(pageSize)
+            .Select(x => new EnrollmentStudentIdentity(
+                x.Id, x.StudentNumber, x.Name, x.AdministrativeClass!.Major!.Name,
+                x.AdministrativeClass.Name, x.AdministrativeClass.Grade))
             .ToListAsync(cancellationToken);
         var studentIds = pageStudents.Select(x => x.StudentId).ToArray();
         var enrollments = await ProjectEnrollments(OrderEnrollments(source.Where(x =>
diff --git a/src/Jiaowu.Api/Infrastructure/Analytics/ClickHouseAnalyticsProjectionWorker.cs b/src/Jiaowu.Api/Infrastructure/Analytics/ClickHouseAnalyticsProjectionWorker.cs
index b77a70b..4ac839f 100644
--- a/src/Jiaowu.Api/Infrastructure/Analytics/ClickHouseAnalyticsProjectionWorker.cs
+++ b/src/Jiaowu.Api/Infrastructure/Analytics/ClickHouseAnalyticsProjectionWorker.cs
@@ -1,3 +1,4 @@
+using Jiaowu.Api.Domain.Academic;
 using Jiaowu.Api.Infrastructure.Persistence;
 using Microsoft.EntityFrameworkCore;
 
@@ -93,7 +94,11 @@ public sealed class ClickHouseAnalyticsProjectionWorker(
                 .Select(x => new { x.AttendanceSheetId, x.StudentId, AttendanceDate = x.AttendanceSheet!.AttendanceDate, TeachingTaskId = x.AttendanceSheet.TeachingTaskId, AcademicTermId = x.AttendanceSheet.TeachingTask!.AcademicTermId, CollegeId = x.AttendanceSheet.TeachingTask.Course!.CollegeId, x.Status, x.CheckInAt, x.CheckedInMethod, x.AppealStatus, ProjectedAt = projectedAt })
                 .ToListAsync(cancellationToken);
             if (rows.Count == 0) return count;
-            await client.InsertAsync("attendanceRecords", rows, cancellationToken);
+            var analyticsRows = rows.Select(x => new AttendanceAnalyticsRow(
+                x.AttendanceSheetId, x.StudentId, DateOnly.FromDateTime(x.AttendanceDate),
+                x.TeachingTaskId, x.AcademicTermId, x.CollegeId, x.Status, x.CheckInAt,
+                x.CheckedInMethod, x.AppealStatus, x.ProjectedAt)).ToList();
+            await client.InsertAsync("attendanceRecords", analyticsRows, cancellationToken);
             count += rows.Count;
             cursorDate = rows[^1].AttendanceDate;
             cursorSheetId = rows[^1].AttendanceSheetId;
@@ -101,6 +106,19 @@ public sealed class ClickHouseAnalyticsProjectionWorker(
         }
     }
 
+    private sealed record AttendanceAnalyticsRow(
+        Guid AttendanceSheetId,
+        Guid StudentId,
+        DateOnly AttendanceDate,
+        Guid TeachingTaskId,
+        Guid AcademicTermId,
+        Guid CollegeId,
+        AttendanceStatus Status,
+        DateTime? CheckInAt,
+        AttendanceCheckInMethod? CheckedInMethod,
+        AttendanceAppealStatus AppealStatus,
+        DateTime ProjectedAt);
+
     private async Task<int> ProjectGradesAsync(AppDbContext db, DateTime projectedAt, CancellationToken cancellationToken)
     {
         var cursorAt = DateTime.MinValue;