glorfindel-SE-Userscripts/hnq-research/3-average-time-by-site.sql
Glorfindel ba2103da9e -
2018-12-22 18:58:33 +01:00

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475 B
SQL

SELECT RANK() OVER(ORDER BY AVG(time)),
site, ROUND(AVG(time), 2) AS "average time", COUNT(*) AS "# of Q"
FROM (
SELECT site, question, SUM(CASE
WHEN timestamp BETWEEN '2018-11-02 18:36:00' AND '2018-11-05 05:30:00'
OR timestamp >= '2018-11-06 06:27:00' THEN 3 -- minutes
ELSE 10 -- minutes
END) / 60.0 AS time
FROM snapshots
GROUP BY site, question
ORDER BY COUNT(*) DESC
) AS subquery GROUP BY site
ORDER BY AVG(time) DESC