From 497819c7fd64d907a90a83040076637bdb8d2cd7 Mon Sep 17 00:00:00 2001
From: Birk <yury556@mail.ru>
Date: Sun, 14 Dec 2025 20:28:38 +0300
Subject: [PATCH] migration to ckickhouse

---
 .../task_220_migration_to_ckick.sql           | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 ybirk/clickhouse/task_220_migration_to_ckick.sql

diff --git a/ybirk/clickhouse/task_220_migration_to_ckick.sql b/ybirk/clickhouse/task_220_migration_to_ckick.sql
new file mode 100644
index 0000000..141e897
--- /dev/null
+++ b/ybirk/clickhouse/task_220_migration_to_ckick.sql
@@ -0,0 +1,80 @@
+CREATE TABLE ybirk.core_user (
+    user_id Int32,
+    name String,
+    age Int32,
+    email String,
+    registration_date Date
+)
+ENGINE = MergeTree
+ORDER BY user_id;
+
+CREATE TABLE ybirk.core_course (
+    course_id Int32,
+    title String,
+    category String
+)
+ENGINE = MergeTree
+ORDER BY course_id;
+
+CREATE TABLE ybirk.core_lesson (
+    lesson_id Int32,
+    title String,
+    duration_min Int32,
+    course_id Int32
+)
+ENGINE = MergeTree
+ORDER BY lesson_id;
+
+CREATE TABLE ybirk.core_fact_lesson_views (
+    user_id Int32, 
+    lesson_id Int32,
+    course_id Int32,
+    viewed_at DateTime64(3)
+)
+ENGINE = MergeTree
+ORDER BY user_id;
+
+CREATE TABLE ybirk.core_enrollments (
+    id Int32,
+    user_id Int32,
+    course_id Int32,
+    enrolled_at Date
+)
+ENGINE = MergeTree
+ORDER BY user_id;
+
+-------------------------
+
+INSERT INTO ybirk.core_user (user_id, name, age, email, registration_date) VALUES
+(1, 'Alice', 25, 'alice@mail.com', '2023-01-10'),
+(2, 'Bob', 30, 'bob@gmail.com', '2023-02-05'),
+(3, 'Charlie', 22, 'charlie@mail.com', '2023-02-20'),
+(4, 'Diana', 28, 'diana@mail.com', '2023-03-01'),
+(5, 'Ethan', 35, 'ethan@gmail.com', '2023-03-10');
+
+INSERT INTO ybirk.core_course (course_id, title, category) VALUES
+(1, 'SQL для начинающих', 'data'),
+(2, 'Python для анализа данных', 'programming'),
+(3, 'BI с нуля', 'business');
+
+INSERT INTO ybirk.core_lesson (lesson_id, course_id, title, duration_min) VALUES
+(1, 1, 'SELECT и FROM', 10),
+(2, 1, 'JOIN', 15),
+(3, 2, 'Pandas', 20),
+(4, 3, 'Основы BI', 12),
+(5, 3, 'Метрики и дашборды', 18);
+
+INSERT INTO ybirk.core_fact_lesson_views (user_id, lesson_id, course_id, viewed_at) VALUES
+(1, 1, 1, '2023-01-16 10:00:00'),
+(1, 2, 1, '2023-01-16 10:15:00'),
+(2, 1, 1, '2023-01-21 09:00:00'),
+(3, 3, 2, '2023-03-06 12:00:00'),
+(4, 4, 3, '2023-04-02 10:00:00'),
+(4, 5, 3, '2023-04-03 10:00:00');
+
+INSERT INTO ybirk.core_enrollments (id, user_id, course_id, enrolled_at) VALUES
+(1, 1, 1, '2023-01-15'),
+(2, 1, 2, '2023-02-01'),
+(3, 2, 1, '2023-01-20'),
+(4, 3, 2, '2023-03-05'),
+(5, 4, 3, '2023-04-01');
\ No newline at end of file