提取SQL中的权重和倍数

Question

我有这样的数据：80X71X120CM @ 95KG，80X71X120CM @ 96KG X 2，80X71X107CM @ 76KG X 5。

如何获得重量的总和（95 + 96 * 2 + 76 * 5）？

Answer 1

首先，我不认为这是存储数据的好方法，就像评论所说的，目前尚不清楚。它是一个包含所有3个帖子的字符串还是3行？是否总是用@分隔它？我把它当作3行，所以这是您可以做的，尽管非常笨拙...

` declare @table as table(stringdata nvarchar(100))

insert into @table values ('80X71X120CM@95KG')
insert into @table values ('80X71X120CM@96KG X 2')
insert into @table values ('80X71X107CM@76KG X 5')


;with cte as (
select 
    substring(stringdata,charindex('@', stringdata) +1,len(stringdata) -charindex('@', stringdata)) as WeightData
from @table
), cte2 as (
select
    left(WeightData, charindex('KG', WeightData)-1) as weight,
    case when charindex('X', WeightData) > 0 then 
        convert(integer, (substring(WeightData,charindex('X', WeightData) +1,len(WeightData) -charindex('X', WeightData))))
    else 
        1
    end as NumberOfPersons,
    case when charindex('X', WeightData) > 0 then 
        convert(integer, (substring(WeightData,charindex('X', WeightData) +1,len(WeightData) -charindex('X', WeightData)))) * convert(integer, left(WeightData, charindex('KG', WeightData)-1) )
    else 
        convert(integer, left(WeightData, charindex('KG', WeightData)-1) )
    end as RowWeight

from cte
)
select 
sum(RowWeight)  as TotalWeight
from cte2 `