执行SQL发生错误！错误：out of memory，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_member_group f ON a.gid=f.id LEFT JOIN ay_content_ext e ON a.id=e.contentid WHERE(a.scode in ('2','3','4') OR a.subscode='2') AND(a.status=1 AND d.type=2 AND a.date<'2025-06-18 19:47:49')