Effectivity of abuse filters

This query is marked as a draft This query has been published by Matěj Suchánek.

SQL

USE cswiki_p;
SELECT afl_filter, SUM(IF(afl_actions LIKE '%warn%', 1, 0)) / (COUNT(*) / 2) AS ratio, COUNT(*) AS hits
FROM abuse_filter_log
WHERE afl_filter NOT LIKE 'global-%'
AND EXISTS (SELECT * FROM abuse_filter_action WHERE afa_filter = afl_filter AND afa_consequence = 'warn')
GROUP BY afl_filter
ORDER BY ratio;

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SQL

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