Bad links from wikis to Commons galleries: broken

SQL

USE dewiki_p;
#USE dewikisource_p;
#USE dewikivoyage_p;
#USE dewiktionary_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 @p = '^$'; #dummy
IF (@w = 'dewikivoyage') THEN
 SET @p = '^Dateien:Nach_Commons_verschieben_';
ELSEIF (@w ='enwiki') THEN
 SET @p = '(?:^Convert_to_SVG_and_copy_to_Wikimedia_Commons$|Wikipedia_files_with_.+_name_on_Wikimedia_Commons)';
END IF;
SELECT now() AS timestamp;
#empty links, no target given
(SELECT CONCAT('# [[', IF (wp.page_namespace = 14, ':{{ns:14}}:', ''),REPLACE (wp.page_title, '_', ' '), ']] ',
               '→ [[:c:', REPLACE (iwl_title, '_', ' '), ']]') AS wikipage
FROM iwlinks
INNER JOIN page wp
ON wp.page_id = iwl_from
AND wp.page_namespace IN (0, 14)
AND wp.page_title NOT REGEXP @p
WHERE iwl_prefix ='commons'
AND iwl_title REGEXP '^ *$'
)
UNION
#broken interwikilinks
(SELECT CONCAT('# [[', IF (wp.page_namespace = 14, ':{{ns:14}}:', ''),REPLACE (wp.page_title, '_', ' '), ']] ',
               '→ [[:c:', REPLACE (iwl_title, '_', ' '), ']]',
               IF (EXISTS (SELECT 1 FROM commonswiki_p.page cp
                           WHERE cp.page_namespace = 14
                           AND cp.page_title = iwl_title), '?cat?', '')) AS wikipage
FROM iwlinks
INNER JOIN page wp
ON wp.page_id = iwl_from
AND wp.page_namespace IN (0, 14)
AND wp.page_is_redirect = 0
AND wp.page_title NOT REGEXP @p
WHERE iwl_prefix ='commons'
AND iwl_title NOT LIKE '%:%' #temp
AND NOT EXISTS (SELECT 1 FROM commonswiki_p.page cp
                WHERE cp.page_title = iwl_title
                AND cp.page_namespace = 0)
)
UNION
#broken external interwiki links
(SELECT CONCAT('# [[', IF (wp.page_namespace = 14, ':{{ns:14}}:', ''),REPLACE (wp.page_title, '_', ' '), ']] ',
               '→ [[:c:', REPLACE ((SUBSTRING(REPLACE (el_to, '?uselang=de', ''), 36)), '_', ' '), ']]',
               IF (EXISTS (SELECT 1 FROM commonswiki_p.page cp
                           WHERE cp.page_namespace = 14
                           AND cp.page_title = (SUBSTRING(REPLACE (REPLACE (el_to, '#mw-subcategories', ''), CONCAT('?uselang=', @l), ''), 36))), '?cat?', '')) AS wikipage
FROM externallinks
INNER JOIN page wp
ON wp.page_id = el_from
AND wp.page_namespace IN (0, 14)
AND wp.page_is_redirect = 0
AND wp.page_title NOT REGEXP @p
WHERE el_to LIKE 'https://commons.wikimedia.org/wiki/%'
AND el_to NOT LIKE 'https://commons.wikimedia.org/wiki/%:%'
AND el_to NOT LIKE '%#%' #temp
AND el_to NOT LIKE '%\%%' #temp
AND NOT EXISTS (SELECT 1 FROM commonswiki_p.page cp
                WHERE cp.page_namespace = 0
                AND cp.page_title = SUBSTRING(REPLACE (REPLACE (el_to, '#mw-subcategories', ''), CONCAT('?uselang=', @l), ''), 36)
               )
)
ORDER BY wikipage
LIMIT 2000;
SQL

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