我有两个 MSSQL 表,如下所示:
boat_data
boat_prices
船数据包含有关船的数据行。每艘船都有一个唯一的 ID (pricingRef) 船价包含每艘船的租赁价格行,并且每艘船可以有任意数量的行。每行也有一个pricingRef 值。boat_prices 表中的示例数据可能是:
pricingRef > pricingDescription > price
ASD1 > fullDay > 1500
ASD1 > perWeek > 9000
ASD1 > morning > 800
ASD2 > fullDay > 2000
ASD2 > perWeek > 12000
ASD2 > morning > 1100
我需要做的是从boat_data 表中带回所有行并将其加入到boat_prices 表中,只带回每艘船的最低价格。我已经编写了下面的 SQL 语句,它可以工作。问题是它真的很笨重和凌乱。我使用 min(price) 从boat_prices 表中取回价格值,然后显式请求boat_data 表中的每个字段,然后按boat_data 表中的每个字段分组。
必须有更好的方法来实现这一点。抱歉,我是 SQL 新手。请帮忙!
select
min(price) as price,
boat_data.ID,
boat_data.boatRef,
boat_data.capacity,
boat_data.sleeps,
boat_data.fuelConsumption,
boat_data.yearBuilt,
boat_data.length,
boat_data.beam,
boat_data.engines,
boat_data.tender,
boat_data.boatName,
boat_data.cabins,
boat_data.speed,
boat_data.location,
boat_data.onSale,
boat_data.supplierID,
boat_data.boatClassID,
boat_data.pricingRef,
boat_data.crew,
boat_data.sportsEquipment
from boat_data
join boat_prices
on boat_data.pricingRef = boat_prices.pricingRef
group by
boat_data.ID,
boat_data.boatRef,
boat_data.capacity,
boat_data.sleeps,
boat_data.fuelConsumption,
boat_data.yearBuilt,
boat_data.length,
boat_data.beam,
boat_data.engines,
boat_data.tender,
boat_data.boatName,
boat_data.cabins,
boat_data.speed,
boat_data.location,
boat_data.onSale,
boat_data.supplierID,
boat_data.boatClassID,
boat_data.pricingRef,
boat_data.crew,
boat_data.sportsEquipment
order by price