【Sql】根据ID集合字符串，逗号拆分到临时表查询。

----1.获取到ID集合
DECLARE @Key nvarchar(max)
select @Key = CAST(Logger AS nvarchar(MAX)) from AIS20190728100136_LC..T_Jzc_ServicesLog where id=10763
--print(@Key)
----2.把ID集合拆分到#Ids临时表
CREATE TABLE #Ids(ID int)
DECLARE @ID varchar(max)
DECLARE @FinalID varchar(max)

  WHILE(charindex(',',@Key) >0)
  BEGIN
  SET @ID = substring(@Key,0,charindex(',',@Key))
 --print(@Id)
 --set @FinalID = SUBSTRING(@ID,2,LEN(@Id)-2)
  set @FinalID =REPLACE(@Id,'''','')
  SET @Key = substring(@Key,charindex(',',@Key)+1,len(@Key))
 --print(@Key)
  INSERT INTO #Ids(ID) VALUES(@FinalID)
  END
   SET @Key =REPLACE(@Key,'''','')
   INSERT INTO #Ids(ID) VALUES(@Key)


----3.关联查询出中间表数据
select * from  ERP.dbo.WEB_Purchase t
where exists (select 1 from #Ids where id = t.id)

----4.手动释放临时表
DROP TABLE #Ids

@Key 的值为： '1','2','3','4'