set max_recursive_iterations=3;

​

with recursive subcats (path, cat_title) as (

  select cl_to, cl_to from categorylinks where cl_type = 'page' and cl_from in (

    select page_id from page where page_title = 'Sabine_Stuart_de_Chevalier' and page_namespace = 0

  )

  union all

  select concat(path, ',', cl_to), cl_to from subcats

  join page on page_title = cat_title and page_namespace = 14

  join categorylinks on cl_from = page_id and cl_type = 'subcat'

)

-- cycle cat_title restrict

select * from subcats where find_in_set('Lists', path);

-- select min(depth), max(depth), cat_title, count(*) from subcats group by cat_title order by count(depth) desc limit 10;

​

-- select count(distinct cl_from) from subcats

-- join categorylinks on cl_to = cat_title and cl_type != 'subcat'

-- where cat_title not in (select cat_title from category where cat_pages = 0)

-- join page on cl_from = page_id

-- order by page_namespace;

​

/*

select cl_to from categorylinks where cl_type = 'page' and cl_from in (

  select page_id from page where page_title = 'Sabine_Stuart_de_Chevalier' and page_namespace = 0

)

*/