Добавил еще немного

db/init/init.sql

@@ -1,5 +1,8 @@
 CREATE EXTENSION IF NOT EXISTS pgcrypto;
 
+-- =====================================================
+-- 1. Таблица users
+-- =====================================================
 CREATE TABLE IF NOT EXISTS users (
     id BIGSERIAL PRIMARY KEY,
     username VARCHAR(50) UNIQUE NOT NULL,
@@ -7,39 +10,48 @@ CREATE TABLE IF NOT EXISTS users (
     role VARCHAR(20) NOT NULL DEFAULT 'STUDENT'
 );
 
--- Админ по умолчанию: admin / admin (bcrypt через pgcrypto)
+-- Админ по умолчанию
 INSERT INTO users (username, password, role)
 VALUES ('admin', crypt('admin', gen_salt('bf', 10)), 'ADMIN')
 ON CONFLICT (username) DO NOTHING;
 
+-- =====================================================
+-- 2. Таблица education_forms
+-- =====================================================
 CREATE TABLE IF NOT EXISTS education_forms (
     id BIGSERIAL PRIMARY KEY,
     name VARCHAR(100) UNIQUE NOT NULL
 );
 
-INSERT INTO education_forms (name) VALUES ('Бакалавриат'), ('Магистратура'), ('Специалитет')
+INSERT INTO education_forms (name) 
+VALUES ('Бакалавриат'), ('Магистратура'), ('Специалитет')
 ON CONFLICT (name) DO NOTHING;
 
+-- =====================================================
+-- 3. Таблица student_groups
+-- =====================================================
 CREATE TABLE IF NOT EXISTS student_groups (
     id BIGSERIAL PRIMARY KEY,
     name VARCHAR(100) UNIQUE NOT NULL,
     education_form_id BIGINT NOT NULL REFERENCES education_forms(id)
 );
 
+-- =====================================================
+-- 4. Таблица lessons (ЭТА ЧАСТЬ БЫЛА ИСПОРЧЕНА)
+-- =====================================================
 CREATE TABLE IF NOT EXISTS lessons (
     id BIGSERIAL PRIMARY KEY,
     teacher_id BIGINT NOT NULL,
     group_id BIGINT NOT NULL,
-    lesson_id BIGINT NOT NULL,
+    discipline_id BIGINT NOT NULL,
     day VARCHAR(255) NOT NULL,
     week VARCHAR(255) NOT NULL,
     time VARCHAR(255) NOT NULL
 );
 
-ALTER TABLE lessons
-    ADD CONSTRAINT fk_lessons_teacher
+-- Добавляем внешние ключи
+ALTER TABLE lessons ADD CONSTRAINT fk_lessons_teacher 
     FOREIGN KEY (teacher_id) REFERENCES users(id);
 
-ALTER TABLE lessons
-    ADD CONSTRAINT fk_lessons_group
+ALTER TABLE lessons ADD CONSTRAINT fk_lessons_group 
     FOREIGN KEY (group_id) REFERENCES student_groups(id);