修复Mysql

src/Jiaowu.Api/Controllers/TimetableManagementController.cs

@@ -317,11 +317,12 @@ public sealed class FreeClassroomsController(AppDbContext db) : ControllerBase
             .CountAsync(x => x.AcademicTermId == academicTermId, cancellationToken);
         var activePeriodCount = configuredPeriodCount == 0
             ? requestedPeriods.Length
-            : await db.ScheduleTimeSlots.AsNoTracking().CountAsync(x =>
-                x.AcademicTermId == academicTermId &&
-                x.IsEnabled &&
-                requestedPeriods.Contains(x.PeriodNumber),
-                cancellationToken);
+            : await db.ScheduleTimeSlots.AsNoTracking()
+                .Where(x =>
+                    x.AcademicTermId == academicTermId &&
+                    x.IsEnabled)
+                .WhereIn(requestedPeriods, x => x.PeriodNumber)
+                .CountAsync(cancellationToken);
         if (activePeriodCount != requestedPeriods.Length)
             return ValidationProblem("查询范围包含不存在或未启用的节次。");
 
@@ -357,8 +358,8 @@ public sealed class FreeClassroomsController(AppDbContext db) : ControllerBase
             .Where(x =>
                 x.IsEnabled &&
                 x.Building!.IsEnabled &&
-                x.Building.Campus!.IsEnabled &&
-                !occupiedIds.Contains(x.Id));
+                x.Building.Campus!.IsEnabled)
+            .WhereNotIn(occupiedIds, x => x.Id);
         if (campusId.HasValue)
             rooms = rooms.Where(x => x.Building!.CampusId == campusId.Value);
         if (buildingId.HasValue)