Articles with most langlinks in enwiki, missing from lvwiki

SQL

USE enwiki_p;  -- articles from EN with most langlinks...

SELECT 
    count(*) ll_count, 
	pp_value,
    page_title title_en
    #(select ll_title from langlinks where ll_from = page_id and ll_lang = 'lv') title_lv,
    #(select ll_title from langlinks where ll_from = page_id and ll_lang = 'ru') title_ru,
    #(select ll_title from langlinks where ll_from = page_id and ll_lang = 'de') title_de,
    #(select ll_title from langlinks where ll_from = page_id and ll_lang = 'pl') title_pl
  FROM
    page, langlinks, page_props
  WHERE
    ll_from = page_id and
    (select count(*) from langlinks where ll_from = page_id) >= 51 and
      -- attempt to limit number of intermediate rows to fetch and sort
    page_id not in (select ll_from from langlinks where ll_lang = 'lv') and
      -- ... missing from SK (no direct iw equivalent there)
    page_id = pp_page and
    pp_propname="wikibase_item" and
    page_namespace = 0
  GROUP BY
    page_id
  ORDER BY 
    ll_count desc, page_title
  LIMIT
    7000;  -- top N
SQL

Checking query status...
