select top 1 产品id,产品名称,库存量,单价
from 产品
order by 库存量 asc, 单价 desc
;
select *
from 产品
where 单价 betwen 2000 and 4500
;
select avg(单价) as 平均价格,sum(单价) as 总价格,
max(单价) as 最高价,min(单价) as 最低价
from 产品
select * from 产品 where min(库存量) and max(单价)
select * from 产品 where 单价>=2000 and 单价<=4500
select avg(价格) as 平均价格,sum(价格) as 总价格,max(单价) as 最高价,min(单价) as 最低价 from 产品
产品”表的表结构呢