From 73988517db77f588dd09b1aa7c404aa7672b8433 Mon Sep 17 00:00:00 2001
From: dr0zd <maximdrozdov29@yandex.ru>
Date: Sat, 31 Jan 2026 01:16:20 +0700
Subject: [PATCH] stage 1 tables

---
 mdrozdov/clickhouse/stage1.sql | 96 ++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 mdrozdov/clickhouse/stage1.sql

diff --git a/mdrozdov/clickhouse/stage1.sql b/mdrozdov/clickhouse/stage1.sql
new file mode 100644
index 0000000..232cbac
--- /dev/null
+++ b/mdrozdov/clickhouse/stage1.sql
@@ -0,0 +1,96 @@
+-- удалить таблицу если раньше создавали
+DROP TABLE IF EXISTS mdrozdov.core_fact_lesson_views
+ON CLUSTER clickhouse_cluster;
+
+-- таблицы измерений
+-- user dimention
+CREATE TABLE mdrozdov.core_dim_user
+ON CLUSTER clickhouse_cluster
+(
+    user_id Int32,
+    name String,
+    age Int32,
+    email String,
+    registration_date Date
+)
+ENGINE = ReplicatedMergeTree(
+    '/clickhouse/tables/{shard}/mdrozdov/core_dim_user',
+    '{replica}'
+)
+ORDER BY user_id;
+
+-- course dimention
+CREATE TABLE mdrozdov.core_dim_course
+ON CLUSTER clickhouse_cluster
+(
+    course_id Int32,
+    title String,
+    category String
+)
+ENGINE = ReplicatedMergeTree(
+    '/clickhouse/tables/{shard}/mdrozdov/core_dim_course',
+    '{replica}'
+)
+ORDER BY course_id;
+
+-- lesson dimention
+CREATE TABLE mdrozdov.core_dim_lesson
+ON CLUSTER clickhouse_cluster
+(
+    lesson_id Int32,
+    title String,
+    duration_min Int32,
+    course_id String,
+)
+ENGINE = ReplicatedMergeTree(
+    '/clickhouse/tables/{shard}/mdrozdov/core_dim_lesson',
+    '{replica}'
+)
+ORDER BY course_id;
+
+-- date dimention
+CREATE TABLE mdrozdov.core_dim_date
+ON CLUSTER clickhouse_cluster
+(
+    date DATE,
+	year Int32,
+	month Int32,
+	day Int32,
+	weekday String
+)
+ENGINE = ReplicatedMergeTree(
+    '/clickhouse/tables/{shard}/mdrozdov/core_dim_date',
+    '{replica}'
+)
+ORDER BY date;
+
+
+-- таблицы фактов
+-- core_enrollments
+CREATE TABLE mdrozdov.core_enrollments
+ON CLUSTER clickhouse_cluster
+(
+    user_id Int32,
+    course_id Int32,
+    enrolled_at DateTime64(3)
+)
+ENGINE = ReplicatedMergeTree(
+    '/clickhouse/tables/{shard}/mdrozdov/core_enrollments',
+    '{replica}'
+)
+ORDER BY course_id;
+
+-- core_fact_lesson_views
+CREATE TABLE mdrozdov.core_fact_lesson_views
+ON CLUSTER clickhouse_cluser
+(
+    user_id Int32, 
+    lesson_id Int32,
+    course_id Int32,
+    viewed_at DateTime64(3)
+)
+ENGINE = ReplicatedMergeTree(
+    '/clickhouse/tables/{shard}/mdrozdov/core_fact_lesson_views',
+    '{replica}'
+)
+ORDER BY course_id;