SQL
AخA
USE zhwiki_p;
SELECT pl_from, COUNT(*) AS `cnt`
FROM pagelinks
LEFT JOIN (
SELECT * FROM redirect
WHERE rd_namespace = 102
) rd ON pl_namespace = 4 AND pl_title = rd_title
LEFT JOIN page ON rd_from = page_id
WHERE page_namespace = 4 AND rd_title IS NOT NULL
GROUP BY pl_from
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