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src/providers/sqlite3/queries/category.js

@@ -65,6 +65,7 @@ FROM categoryarticle ca
 INNER JOIN article a ON a.id = ca.article_id
 ${ARTICLE_LIST_JOINS}
 WHERE ca.category_id = @categoryId
+  AND a.fatherarticle_id IS NULL
 ORDER BY a.id
 `;