Оптимизация MV: замена NOT IN на ANTI JOIN

2026-01-06 18:16:55 +03:00
parent 4f017d0efd
commit a4e637d3a2
1 changed files with 3 additions and 4 deletions
@@ -136,6 +136,8 @@ GROUP BY
    flv.course_id,
    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
 TO ybirk.inactive_users_summary
 AS
@@ -148,10 +150,7 @@ SELECT
    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
-)
+LEFT ANTI JOIN ybirk.core_fact_lesson_views AS flv ON u.user_id = flv.user_id
 GROUP BY
    u.user_id,
    u.name,