需要update 数据成 满足条件的第一行
运行提示信息
update mg.detail a set (id, promotion_price)=
(
select sub.id, sub.promotion_price from
(select b.id, b.shop_id, c.barcode, c.sale_scale, c.promotion_price,
from mg.promotion b, mg.promotion_goods c
where c.id = b.id and b.status = 0 and b.start_time <= sysdate and b.finish_time >= sysdate
and b.shop_id = a.shop_id and c.barcode = a.barcode and c.sale_scale = a.sale_scale
order by b.id
) sub
where rownum=1
)
where exists (select 1 from mg.promotion b, mg.promotion_goods c
where c.id = b.id and b.status = 0 and b.start_time <= sysdate and b.finish_time >= sysdate
and b.shop_id = a.shop_id and c.barcode = a.barcode and c.sale_scale = a.sale_scale)
确定表格字段没问题，感觉是ORACLE update 不支持该语法；删除sale_scale条件后 提示barcode字段，删除barcode条件后 提示shop_id字段
