Number of lexemes with a single form without grammatical features

This query is marked as a draft This query has been published by Lucas Werkmeister.

We can’t directly query for the grammatical features of a lexeme in SQL, but except in rare special cases, a lexeme with two links from its page will have a language and a lexical category (which are not the same and therefore two links) and no grammatical features on any of its forms (unless they match one of the other two items).

SQL

USE `wikidatawiki_p`;

SELECT COUNT(*)
FROM `page_props`
WHERE `pp_propname` = 'wbl-forms'
AND `pp_sortkey` = 1
AND (
  SELECT COUNT(*)
  FROM `pagelinks`
  WHERE `pl_from` = `pp_page`
) = 2;

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SQL

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