Bad links from dewiki to other wikis: redirects

SQL

#USE dewiki_p;
#USE dewikisource_p;
#USE dewikiquote_p;
#USE dewikivoyage_p;
#USE enwiki_p;
#USE frwiki_p;
#USE itwiki_p;
USE nlwiki_p;
#USE specieswiki_p;
SET @w = LEFT (DATABASE(), LENGTH(DATABASE()) - 2); SET @l = (SELECT lang FROM meta_p.wiki WHERE dbname = @w);
SET @lenmw = LENGTH('https://www.mediawiki.org/wiki/');
SELECT now() AS timestamp;
#interwiki links to article redirects
(SELECT CONCAT ('# [[', IF (wp.page_namespace = 14, ':{{ns:14}}:', ''), REPLACE (wp.page_title, '_', ' '), ']] ',
                '→ [[mw:', REPLACE (iwl_title, '_', ' '), ']]') AS wikipage
FROM iwlinks
INNER JOIN page wp
ON wp.page_id = iwl_from
AND wp.page_namespace IN (0, 14)
INNER JOIN mediawikiwiki_p.page cp
ON cp.page_title = iwl_title
AND cp.page_namespace = 0
AND cp.page_is_redirect = 1
WHERE iwl_prefix IN ('mw', 'mediawiki', 'mediawikiwiki')
#AND iwl_title NOT LIKE 'Category:%'
)
UNION
#external interwiki links to article redirects
(SELECT CONCAT('# [[', IF (wp.page_namespace = 14, ':{{ns:14}}:', ''), REPLACE (wp.page_title, '_', ' '), ']] ',
               '→ [[mw:', REPLACE (cp.page_title, '_', ' '), ']]') AS wikipage
FROM externallinks
INNER JOIN page wp
ON wp.page_id = el_from
AND wp.page_namespace IN (0, 14)
INNER JOIN mediawikiwiki_p.page cp
ON cp.page_title = SUBSTRING(REPLACE (el_to, CONCAT('?uselang=', @l), ''), IF ((LEFT (el_to, 5) = 'https'), @lenmw + 1, @lenmw))
AND cp.page_namespace = 0
AND cp.page_is_redirect = 1
WHERE ((el_to LIKE 'https://www.mediawiki.org/wiki/%') OR (el_to LIKE 'http://www.mediawiki.org/wiki/%'))
#AND el_to NOT LIKE '%//www.mediawiki.org/wiki/Category:%'
AND el_to NOT LIKE '%\%%' #temp
)
ORDER BY wikipage
LIMIT 500;
SQL

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