解答
188
SQL文(クエリ)
WITH master AS ( SELECT cid , session_count , MAX(cv_page) AS cv FROM ( SELECT * , IF(page = "/thank_you/", 1, 0) AS cv_page FROM sample.web_log ) GROUP BY cid , session_count ) SELECT cv_count , COUNT(DISTINCT cid) AS users FROM ( SELECT cid , SUM(cv) AS cv_count FROM master GROUP BY cid ) GROUP BY cv_count ORDER BY cv_count DESC