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Оптимизация MV: замена NOT IN на ANTI JOIN

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Birk
2026-01-06 18:16:55 +03:00
parent 4f017d0efd
commit a4e637d3a2
1 changed files with 3 additions and 4 deletions
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ybirk/clickhouse/task_220_&_221.sql
+3 -4
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@@ -136,6 +136,8 @@ GROUP BY
flv.course_id, flv.course_id,
c.title; c.title;
DROP VIEW IF EXISTS ybirk.mv_inactive_users_summary ON CLUSTER clickhouse_cluster;
CREATE MATERIALIZED VIEW ybirk.mv_inactive_users_summary ON CLUSTER clickhouse_cluster CREATE MATERIALIZED VIEW ybirk.mv_inactive_users_summary ON CLUSTER clickhouse_cluster
TO ybirk.inactive_users_summary TO ybirk.inactive_users_summary
AS AS
@@ -148,10 +150,7 @@ SELECT
u.registration_date AS registration_date u.registration_date AS registration_date
FROM ybirk.core_user AS u FROM ybirk.core_user AS u
LEFT JOIN ybirk.core_enrollments AS e ON u.user_id = e.user_id LEFT JOIN ybirk.core_enrollments AS e ON u.user_id = e.user_id
WHERE u.user_id NOT IN ( LEFT ANTI JOIN ybirk.core_fact_lesson_views AS flv ON u.user_id = flv.user_id
SELECT DISTINCT user_id
FROM ybirk.core_fact_lesson_views
)
GROUP BY GROUP BY
u.user_id, u.user_id,
u.name, u.name,