一个变量赋值的问题
语句如下:

DECLARE @companyid VARCHAR (100)
SET @companyid='102,103,106,107,108'
SELECT * FROM oCompany WHERE CompanyID IN (@companyid)

得不到结果。
如果where CompanyID IN(102,103,106,107,108) 是可以得到结果的。

[解决办法]
用动态SQL,

DECLARE @companyid VARCHAR(100),@tsql varchar(6000)

SET @companyid='102,103,106,107,108'

select @tsql='SELECT * FROM oCompany WHERE CompanyID IN ('+@companyid+')'

exec(@tsql)

[解决办法]
楼主也可以改一下：

DECLARE @companyid VARCHAR (100) 
SET @companyid='102,103,106,107,108'
SELECT * 
FROM oCompany 
WHERE charindex(CompanyID, @companyid ) > 0