Bad categorylinks

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

Category links from user pages

SQL

use hewiki_p;
select distinct(page_title) from page
inner join categorylinks cl
on
	cl_from = page_id
inner join 
(select cl_to from categorylinks
inner join page 
	on cl_from=page_id  
where 
	(page_namespace=0 or page_namespace=2) 
group by cl_to 
	having count(distinct(page_namespace))>1 
    and sum(if(page_namespace=0,1,0))>sum(if(page_namespace=2,1,0))) bad_cats
on 
	bad_cats.cl_to=cl.cl_to
where 
page_namespace=2

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