blank single author pages

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

SQL

use wikidatawiki_p;
SELECT
          page_namespace,
          CONVERT(page_title USING utf8)
        FROM page
        WHERE page_len = 0 
        AND page_namespace NOT IN (2,3)
        AND (SELECT
               COUNT(DISTINCT rev_user_text)
             FROM revision
             WHERE rev_page = page_id) = 1
        LIMIT 2000;

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