SELECT a.id FROM mb_product a left join mb_distribution_product p ON a.id=p.product_id left join  b on a.id=b.product_id left join mb_shop c on a.member_id=c.userid WHERE c.shop_statu=1 and a.status>0 and is_shelves=1  and b.property_2="49"  and LOCATE('100201',a.catid)=1  and a.name = 'WDZ-BYJ(F)'  order by (CASE WHEN b.property_1 < 3 THEN 0 ELSE 1 END) DESC, a.rank desc,(CASE WHEN (a.is_top=1 and a.is_rec=1) THEN 3 WHEN (a.is_top=1) THEN 2 WHEN (a.is_rec=1) THEN 1 ELSE 0 END) DESC, (CASE WHEN (a.price=0) THEN 1 ELSE 0 END) ASC,c.grade desc,b.property_6 desc,b.property_8 asc,a.uptime desc limit 0,1500Table 'mb.b' doesn't exist