Product Analytics. Part 1 Onboarding funnel analysis on the web. Part 3

147. Onboarding funnel analysis on the web. Part 3

Let’s have a list of the onboarding pages for the reference:

  1. /welcome
  2. /select-genres
  3. /library
  4. /reader/:slug

Now let’s build a query to analyze the whole funnel. For one step funnel we rely on LEFT JOIN:

SELECT COUNT(DISTINCT(w.user_id)) AS welcome_users, COUNT(DISTINCT(g.user_id)) AS choose_genres_users, 100.0 * (1 - COUNT(DISTINCT(g.user_id)) / COUNT(DISTINCT(w.user_id))::numeric) AS churn_rate FROM web_analytics.pageviews w LEFT JOIN web_analytics.pageviews g ON w.visitor_id = g.visitor_id AND g.url LIKE '%/select-genres%' AND g.referer_url...
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