select RegInfo.sh as 审核,sddm 商店代码,khmc 商店名称,max(vw_lsxhmx.rq) as 最近零售日期 from RegInfo 
left join kehu on kehu.khdm=reginfo.sddm
left join vw_lsxhmx on vw_lsxhmx.DM1=reginfo.sddm
group by RegInfo.sh,sddm,khmc