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_content_ext e ON a.id=e.contentid WHERE(a.scode in ('6','14','15') OR a.subscode='6') AND(a.status=1 AND d.type=2 AND a.date<'2024-12-24 02:18:39') AND(ext_ext_edingdianya like '%400VDC%' AND ext_ext_jiaoju like '%20%' AND ext_ext_wendutexing like '%UJ%' )