Question

我有一张桌子：

login_id    product_name  price    bid_price

123         onion         500      515
150         onion         500      517
115         tomato        475      580
120         potato        399      410
145         potato        399      413
145         potato        399      405

我需要选择那些记录，其product_name具有多个出价，而不是每个产品的最高出价

预期结果：

login_id    product_name  price    bid_price

123         onion         500      515
120         potato        399      410
145         potato        399      405

Answer 1

通过使用row_number()

with cte as
(
select *, row_number() over(partition by porduct_name order by bid_price desc) rn
from t1
) select * from cte where rn<>1



 login_id   porduct_name    price   bid_price
   123          onion           500     515
   120          potato          399     410
   145          potato          399     405

Answer 2

您可以使用相关子查询

DEMO

select * from tablename a 
where not exists 
  (select 1 from tablename b where a.product_name=b.product_name
         group by b.product_name having count(bid_price)=1)
and bid_price not in 
    (select max(bid_price) from tablename c where a.product_name=c.product_name)

输出：

login_id    porduct_name    price   bid_price
123         onion           500     515
120         potato          399     410
145         potato          399     405

Answer 3

您可以加入每种产品的最高出价，然后选择其他所有内容

select t.*
from your_table t
left join 
(
    select product_name, max(bid_price) as maxbid
    from your_table
    group by product_name
) tmp on tmp.product_name = t.product_name
     and tmp.maxbid = t.bid_price
where tmp.product_name is null

Answer 4

您可以使用Common Table Expression

with cte_test1
as
(
    select t.product_name, count(*) [RowsCount],max(t.bid_price) [max_bid_price]
    from dbo.Test001 t
    group by t.product_name
)

select *
from dbo.Test001 t
join cte_test1 c on c.product_name=t.product_name
where c.RowsCount>1 and t.bid_price<c.max_bid_price

选择每个组中除最大记录以外的所有记录

4 个答案: