Foren / National / Russian / Тех. поддержка / Как удалить теги?

DELETE FROM sed_tags WHERE (SELECT COUNT(*) FROM sed_tag_references WHERE sed_tags.tag = sed_tag_references.tag) <= 2;
DELETE FROM sed_tag_references WHERE (SELECT COUNT(*) FROM sed_tags WHERE sed_tag_references.tag = sed_tags.tag) = 0;