需要一个 qry 将逗号分隔的列与另一个包含其 ID 的表连接以查找代码 [英] Need a qry to join a comma separated column with another table with its Id in it to find the code

问题描述

我有一张桌子

<前>表名 TB1mpeFromWHId mpeToStoreList8 16、18、24

和表tb2是逗号分隔的storeid代码

<前>nlid nlcode16 ncl18 毫升24 直流电

我需要一个结果为

的查询<前>列 1 列 28 ncl、mcl、dcl

解决方案

首先你需要一个函数来解析逗号分隔的字符串到表格中，你可以使用这个(找到 [here])1:

CREATE FUNCTION [dbo].Split1(@input AS Varchar(4000))退货@Result 表(值 BIGINT)作为开始声明 @str VARCHAR(20)声明 @ind IntIF(@input 不为空)开始SET @ind = CharIndex(',',@input)而@ind >0开始SET @str = SUBSTRING(@input,1,@ind-1)SET @input = SUBSTRING(@input,@ind+1,LEN(@input)-@ind)INSERT INTO @Result 值 (@str)SET @ind = CharIndex(',',@input)结尾SET @str = @inputINSERT INTO @Result 值 (@str)结尾返回结尾

然后你可以使用这样的东西(当然还有更多的选择):

声明@searchId int设置@searchId = 8声明@tb1 表 (mpeFromWHId int, mpeToStoreList varchar(100))插入@tb1选择 8, '16,18,24'声明@tb2 表(nlid int，nlcode varchar(30))插入@tb2选择 16, 'ncl' 联合选择 18, 'mcl' 联合选择 24, 'dcl'选择东西((选择 ',' + nlcode来自@tb2其中 nlid 在 (选择值from dbo.Split1((从@tb1 中选择 mpeToStoreList 其中 mpeFromWHId = @searchId)))按 nlcode 订购对于 xml 路径('')，输入).value('(./text())[1]','varchar(max)'), 1, 2, '')

I have a table with

Table name TB1
mpeFromWHId mpeToStoreList
8            16,18,24

and Table tb2 are the codes of the comma separated storeid

nlid  nlcode
16     ncl
18     mcl
24     dcl

I need a query that will result in

col1   Col2
8      ncl,mcl,dcl

解决方案

First you need a function to parse comma delimited string into table, you can use this (found [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 

Then you can use something like this (but there are many more options off course):

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, '')

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