Which languages have the most terms with redundant head parameter

SQL

select
	language, count as redundant_head_parameter_page_count,
    lemma_count, nonlemma_count,
    round(cast(count as float) / cast(coalesce(lemma_count, 0) + coalesce(nonlemma_count, 0) as float), 2) as fraction
from (
  select language, count(*) as count
  from (
    select substring(cl_to, 1, instr(cl_to, '_terms_with_redundant_head_parameter') - 1) as language
    from categorylinks
    where cl_to like '%\_terms\_with\_redundant\_head\_parameter'
  ) as category_appearances
  group by language
  order by count desc
) as languages

left join (
  select lemma_language, count(*) as lemma_count
  from (
    select
    	substring(cl_to, 1, instr(cl_to, '_lemmas') - 1) as lemma_language,
    	cl_from
    from categorylinks
    where cl_to like '%\_lemmas'
    group by cl_from
  ) as lemmas
  group by lemma_language
) as lemmas
on lemma_language = language

left join (
  select nonlemma_language, count(*) as nonlemma_count
  from (
    select
    	substring(cl_to, 1, instr(cl_to, '_non-lemma_forms') - 1) as nonlemma_language,
    	cl_from
    from categorylinks
    where cl_to like '%\_non-lemma\_forms'
    group by cl_from
  ) as nonlemmas
  group by nonlemma_language
) as nonlemmas
on nonlemma_language = language;
SQL

Checking query status...
