Добавил проверку на null в две датамарта

2025-12-13 22:06:10 +03:00
parent 717f705fad
commit aaef806630
2 changed files with 3 additions and 3 deletions
@@ -3,7 +3,7 @@ create materialized view platform_summary as
        lv_stats as (
            select 
                count(distinct user_id) as users_with_views,
-                count(*)::decimal / count(distinct lesson_id) as avg_views_per_lesson
+                count(*)::decimal / nullif(count(distinct lesson_id), as avg_views_per_lesson
            from lesson_views
    	)
 	select 
@@ -11,7 +11,7 @@ create materialized view platform_summary as
 		total_courses,
 		total_lessons,
 		users_with_views,
-		round((total_lessons::decimal / total_courses), 2) AS avg_lessons_per_course,
+		round((total_lessons::decimal / nullif(total_courses, 2)), 2) AS avg_lessons_per_course,
 		round(avg_views_per_lesson, 2) as avg_views_per_lesson
 	from 
 		(