Выполнил миграцию и МВ
This commit is contained in:
Birk
@@ -0,0 +1,195 @@
|
||||
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;
|
||||
|
||||
----------------------------------
|
||||
|
||||
CREATE TABLE ybirk.inactive_users_summary
|
||||
(
|
||||
user_id UInt32,
|
||||
name String,
|
||||
email String,
|
||||
age UInt8,
|
||||
registered_courses_count UInt32,
|
||||
registration_date DateTime64(3, 'UTC')
|
||||
)
|
||||
ENGINE = AggregatingMergeTree
|
||||
ORDER BY (user_id);
|
||||
|
||||
|
||||
CREATE TABLE ybirk.lesson_popularity_summary
|
||||
(
|
||||
lesson_id UInt32,
|
||||
lesson_title String,
|
||||
course_id UInt32,
|
||||
course_title String,
|
||||
total_views UInt32,
|
||||
unique_users UInt32,
|
||||
first_view DateTime64(3, 'UTC'),
|
||||
last_view DateTime64(3, 'UTC')
|
||||
)
|
||||
ENGINE = AggregatingMergeTree
|
||||
ORDER BY (lesson_id, course_id);
|
||||
|
||||
|
||||
CREATE TABLE ybirk.course_completion_rate
|
||||
(
|
||||
user_id UInt32,
|
||||
user_name String,
|
||||
course_id UInt32,
|
||||
course_title String,
|
||||
lessons_in_course UInt32,
|
||||
lessons_viewed UInt32,
|
||||
completion_rate Float32
|
||||
)
|
||||
ENGINE = AggregatingMergeTree
|
||||
ORDER BY (user_id, course_id);
|
||||
|
||||
-------------------------------------------
|
||||
|
||||
CREATE MATERIALIZED VIEW ybirk.mv_lesson_popularity_summary
|
||||
TO ybirk.lesson_popularity_summary
|
||||
AS
|
||||
SELECT
|
||||
flv.lesson_id AS lesson_id,
|
||||
l.title AS lesson_title,
|
||||
flv.course_id AS course_id,
|
||||
c.title AS course_title,
|
||||
count() AS total_views,
|
||||
uniqExact(flv.user_id) AS unique_users,
|
||||
min(flv.viewed_at) AS first_view,
|
||||
max(flv.viewed_at) AS last_view
|
||||
FROM ybirk.core_fact_lesson_views AS flv
|
||||
JOIN ybirk.core_lesson AS l ON flv.lesson_id = l.lesson_id
|
||||
JOIN ybirk.core_course AS c ON flv.course_id = c.course_id
|
||||
GROUP BY
|
||||
flv.lesson_id,
|
||||
l.title,
|
||||
flv.course_id,
|
||||
c.title;
|
||||
|
||||
CREATE MATERIALIZED VIEW ybirk.mv_inactive_users_summary
|
||||
TO ybirk.inactive_users_summary
|
||||
AS
|
||||
SELECT
|
||||
u.user_id AS user_id,
|
||||
u.name AS name,
|
||||
u.email AS email,
|
||||
u.age AS age,
|
||||
countDistinct(e.course_id) AS registered_courses_count,
|
||||
u.registration_date AS registration_date
|
||||
FROM ybirk.core_user AS u
|
||||
LEFT JOIN ybirk.core_enrollments AS e ON u.user_id = e.user_id
|
||||
WHERE u.user_id NOT IN (
|
||||
SELECT DISTINCT user_id
|
||||
FROM ybirk.core_fact_lesson_views
|
||||
)
|
||||
GROUP BY
|
||||
u.user_id,
|
||||
u.name,
|
||||
u.email,
|
||||
u.age,
|
||||
u.registration_date;
|
||||
|
||||
CREATE MATERIALIZED VIEW ybirk.mv_course_completion_rate
|
||||
TO ybirk.course_completion_rate
|
||||
AS
|
||||
SELECT
|
||||
u.user_id AS user_id,
|
||||
u.name AS user_name,
|
||||
c.course_id AS course_id,
|
||||
c.title AS course_title,
|
||||
countDistinct(l.lesson_id) AS lessons_in_course,
|
||||
countDistinct(flv.lesson_id) AS lessons_viewed,
|
||||
if(countDistinct(l.lesson_id) = 0,0,
|
||||
round(countDistinct(flv.lesson_id) * 1.0 / countDistinct(l.lesson_id),2)
|
||||
) AS completion_rate
|
||||
FROM ybirk.core_enrollments AS e
|
||||
JOIN ybirk.core_user AS u ON e.user_id = u.user_id
|
||||
JOIN ybirk.core_course AS c ON e.course_id = c.course_id
|
||||
JOIN ybirk.core_lesson AS l ON c.course_id = l.course_id
|
||||
LEFT JOIN ybirk.core_fact_lesson_views AS flv
|
||||
ON flv.user_id = e.user_id
|
||||
AND flv.course_id = e.course_id
|
||||
GROUP BY
|
||||
u.user_id,
|
||||
u.name,
|
||||
c.course_id,
|
||||
c.title;
|
||||
|
||||
----------------------------------------------
|
||||
|
||||
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');
|
||||
@@ -1,80 +0,0 @@
|
||||
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');
|
||||
Reference in New Issue
Block a user