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fixed mistakes

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Dmitry Medvedev
2026-07-19 20:14:03 +05:00
parent fe1db7ae1e
commit 2dc158dd95
8 changed files with 183 additions and 157 deletions
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dmedvedev/11.4 Pet project Cohort_analysis.sql
+2 -1
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@@ -6,7 +6,8 @@ SELECT
COUNT(DISTINCT pu.id) AS users_in_cohort,
COUNT(DISTINCT pe.user_id) AS enrolled_users,
COUNT(DISTINCT plv.user_id) AS active_users,
ROUND(COUNT(DISTINCT plv.user_id) * 100.0 / COUNT(DISTINCT pu.id), 2) || '%' AS retention_rate,
--ROUND(COUNT(DISTINCT plv.user_id) * 100.0 / COUNT(DISTINCT pu.id), 2) || '%' AS retention_rate,
ROUND(COUNT(pe.id) * 100.0 / COUNT(DISTINCT pu.id), 2) || '%' AS retention_rate,
ROUND(AVG((SELECT COUNT(pe.id)
FROM pet_enrollments pe)) / COUNT(DISTINCT pu.id), 2) AS avg_courses_per_user,
(SELECT