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DedSec256
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October 27, 2026 11:28
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Что сделано
Вынесены преподаватели курса из строки
Course.MentorIds(где ID шли через/) в отдельную доменную сущностьCourseMentor(таблицаCourseMentors, составной ПКUserId+CourseId).Принципиальные решения
LIKEпо строке на эффективныйEXISTSпо индексируемомуUserId(FK на контекст курса).CourseDTO.MentorIds (string[])не менялся. Гейтвей и фронтенд работают без правок.NewCourseMateEvent,LecturerAccept/RejectToCourseEvent) продолжают слатьstring. Сборкаstring.Join("/", ...)происходит под капотомCoursesService, подписчики (например,NotificationService) не затронуты.AddCourseMentorTable— backfill-миграция, которая переносит исторические значенияMentorIdsв новую таблицу (с помощьюSTRING_SPLITпо/).DropMentorIds— удаляет легаси-колонку после успешного переноса данных.Замечания для деплоя
Связанные задачи
Closes #567