Question

我有一张表，其中有一列有QTY范围，如1-5,6-9等，另一列有价格。即

Price QTY
------------------------
Price         Qty Range
-----         ----------
45            1-5
35            6-9
30            10-18

现在我想从数量为7的表中得到结果因此返回的价格应为35（因为数量7在6-9范围内

任何有助于大力推荐的帮助

Answer 1

试试这个： -

  Declare @val int
  Set @val=7

 ;with cte(price,startVal,endVal) as
  ( Select price,
    parsename(replace([Qty Range],'-','.'),2),
    parsename(replace([Qty Range],'-','.'),1)
    from yourTable
  )
  Select Price from cte 
  where @val between startVal and endVal

结果：35

SQL FIDDLE

中的演示

Answer 2

如果您无法重新设计表格，那么您可以使用几个CTEs将其重新构建为此查询的合理表格：

declare @PriceRanges table (Price int,QtyRange varchar(20))
insert into @PriceRanges (Price,QtyRange) values
(45,'1-5'),
(35,'6-9'),
(30,'10-18')

declare @Search int
set @Search = 7

;with FoundDashes as (
    select Price,QtyRange,CHARINDEX('-',QtyRange) as DashPos
    from @PriceRanges
)
, SaneRanges as (
    select Price,CONVERT(int,SUBSTRING(QtyRange,1,DashPos-1)) as LowRange,CONVERT(int,SUBSTRING(QtyRange,DashPos+1,8000)) as HighRange
    from FoundDashes
)
select Price from SaneRanges where @Search between LowRange and HighRange

结果生成35。

SQL-SERVER从表中获取结果，其中值为1-9

2 个答案: