执行SQL发生错误！错误：no such column: wd，语句：SELECT COUNT(*) AS sum FROM ay_content a LEFT JOIN ay_content_sort b ON a.scode=b.scode LEFT JOIN ay_content_sort c ON a.subscode=c.scode LEFT JOIN ay_model d ON b.mcode=d.mcode LEFT JOIN ay_content_ext e ON a.id=e.contentid WHERE(a.status=1 AND d.type=2 AND a.date<'2024-11-22 08:01:08') AND(wd like '%л%' )