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RyanSteinberg
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SQL
-- count of ext ncbi links by path for pages in W SET @hostname_regex = '^([^:/?#]+:)?(\/+([^/?#:]*))?([^\?#]*)\?.*'; SELECT REGEXP_SUBSTR( REGEXP_REPLACE( LOWER(CONVERT(el_to USING utf8)), @hostname_regex, '\\4' ), '(/[^/]+)' ) AS path, COUNT(DISTINCT el_from, el_to) AS num_links FROM externallinks WHERE REGEXP_REPLACE(LOWER(CONVERT(el_to USING utf8)), @hostname_regex, '\\3') LIKE '%.ncbi.nlm.nih.gov' GROUP BY path ORDER BY num_links DESC;
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