/*

select lt_namespace, lt_title, group_concat(page_title separator ','), count(page_id) as links from templatelinks

join linktarget on lt_id = tl_target_id -- and lt_namespace in (10, 828)

-- and lt_namespace = 828 and lt_title = 'Citation/CS1'

-- and lt_namespace = 10 and lt_title like 'Cite\_%'

-- and lt_namespace = 828 and lt_title = 'Lang'

and lt_namespace = 10 and lt_title like 'Lang-%'

join page on page_id = tl_from and page_namespace = 0 and tl_from_namespace = 0

where page_id in (

  select cl_from from categorylinks

  where cl_to = 'All_disambiguation_pages' and cl_type = 'page'

)

group by tl_target_id

having links < 4

order by links desc

*/

​

/*

select distinct page_title from templatelinks

join linktarget on lt_id = tl_target_id and lt_namespace = 10 and lt_title like 'Lang-%'

join page on page_id = tl_from and page_namespace = 0 and tl_from_namespace = 0

where page_id in (

  select cl_from from categorylinks

  where cl_to = 'All_disambiguation_pages' and cl_type = 'page'

)

*/

​

select count(*) from page

join redirect on page_id = rd_from and rd_namespace = 10

where page_namespace = 10 and page_title like 'Lang-%'