sql-server-2008 - 需要一个 qry 以将逗号分隔的列与另一个带有其 Id 的表连接起来以查找代码

Question

我有一张桌子

表名 TB1
mpeFromWHId mpeToStoreList
8 16,18,24

和 Tabletb2是逗号分隔的 storeid 的代码

nlid nlcode
16个
18 毫升
24 分

我需要一个会导致

col1 Col2
8 ncl，mcl，dcl

Answer 1

首先，您需要一个函数将逗号分隔的字符串解析为表，您可以使用它（找到 [here]）1：

CREATE FUNCTION [dbo].Split1(@input AS Varchar(4000) )
RETURNS
      @Result TABLE(Value BIGINT)
AS
BEGIN
      DECLARE @str VARCHAR(20)
      DECLARE @ind Int

      IF(@input is not null)
      BEGIN
            SET @ind = CharIndex(',',@input)
            WHILE @ind > 0
            BEGIN
                  SET @str = SUBSTRING(@input,1,@ind-1)
                  SET @input = SUBSTRING(@input,@ind+1,LEN(@input)-@ind)
                  INSERT INTO @Result values (@str)
                  SET @ind = CharIndex(',',@input)
            END
            SET @str = @input
            INSERT INTO @Result values (@str)
      END
      RETURN
END 

然后你可以使用这样的东西（但当然还有更多的选择）：

declare @searchId int
set @searchId = 8

declare @tb1 table (mpeFromWHId int, mpeToStoreList varchar(100))
insert into @tb1
select 8, '16,18,24'

declare @tb2 table (nlid int, nlcode varchar(30))
insert into @tb2
select 16, 'ncl' union
select 18, 'mcl' union
select 24, 'dcl'

select stuff((
    select ',' + nlcode
    from @tb2
    where nlid in (
        select Value 
        from dbo.Split1((select mpeToStoreList from @tb1 where mpeFromWHId = @searchId))
    )
    order by nlcode
    for xml path(''), type
).value('(./text())[1]','varchar(max)'), 1, 2, '')

Answer 2

如果您不想创建用户功能，可以这样做：

;with TB1(mpeFromWHId, mpeToStoreList) AS (
   select 8,'16,18,24'
)
SELECT t.mpeFromWHId,n.ID FROM (
      select *,convert(XML,'<n>'+replace(mpeToStoreList,',','</n><n>')+'</n>') as x from tb1 
) AS t
cross apply(select s.b.value('.','INT') as ID from t.x.nodes('n') s(b)) n

mpeFromWHId ID

8 16
8 18
8 24