Cleanup WikiProject templates on talk page of redirects

SQL

/*
select count(*) from page where page_namespace = 1 and page_is_redirect = 0
and page_title in (select page_title from page where page_namespace = 0 and page_is_redirect = 1)
and page_id in (
  select tl_from from templatelinks where tl_target_id in (
    select lt_id from linktarget where lt_title in ('WikiProject_Disambiguation') and lt_namespace = 10
  )
)
*/

/*
select count(*) from page p1 join redirect on p1.page_id = rd_from and rd_namespace = 0
join page p2 on p2.page_title = rd_title and p2.page_namespace = 0
where p1.page_namespace = 0 and p1.page_is_redirect = 1
and p1.page_title in (
  select page_title from page where page_namespace = 1 and page_is_redirect = 0
  and page_id in (
    select tl_from from templatelinks where tl_target_id in (
      select lt_id from linktarget where lt_title in ('WikiProject_Disambiguation') and lt_namespace = 10
    )
  )
)
and p2.page_title in (
  select page_title from page where page_namespace = 1 and page_is_redirect = 0
  and page_id not in (
    select tl_from from templatelinks where tl_target_id in (
      select lt_id from linktarget where lt_title in ('WikiProject_Disambiguation') and lt_namespace = 10
    )
  )
)
*/

select GROUP_CONCAT(p1.page_title SEPARATOR ', '), p2.page_title from page p1
join redirect on p1.page_id = rd_from and rd_namespace = 0
join page p2 on p2.page_title = rd_title and p2.page_namespace = 0
where p1.page_namespace = 0 and p1.page_is_redirect = 1
and p1.page_title in (
  select page_title from page where page_namespace = 1 and page_is_redirect = 0
  /*
  and page_id in (
    select tl_from from templatelinks where tl_target_id in (
      select lt_id from linktarget where lt_title in ('WikiProject_Disambiguation') and lt_namespace = 10
    )
  )
  and page_id in (
    select tl_from from templatelinks where tl_target_id in (
      select lt_id from linktarget where lt_title in ('Talk_page_of_redirect') and lt_namespace = 10
    )
  )
  */
)
and p2.page_title not in (
  select page_title from page where page_namespace = 1 -- and page_is_redirect = 0
)
group by p2.page_title
order by count(p1.page_title) desc

/*
select page_title from page where page_namespace = 0 and page_is_redirect = 1
and page_id in (
  select cl_from from categorylinks where cl_to in ('All_disambiguation_pages') and cl_type = 'page'
)
*/

/*
select p1.page_title, p1.page_len from page p1 join redirect on rd_from = p1.page_id and rd_namespace = 0
join page p2 on rd_title = p2.page_title and p2.page_namespace = 0
where p1.page_namespace = 0 and p1.page_is_redirect = 1
and p2.page_id in (
  select cl_from from categorylinks
  where cl_to in ('All_disambiguation_pages', 'All_set_index_articles') and cl_type = 'page'
)
order by p1.page_len desc
limit 100
*/
SQL

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