请教带表名参数的sql函数如何定义？

Question

请教带表名参数的sql函数如何定义

Answer 1

create proc [dbo].[p_getParentPath]
@classid int output,
@tbTable nvarchar(20)
as
begin
declare @sql nvarchar(4000)
declare @re_str as varchar(100)
set @re_str = ''
select @re_str = ltrim(parentid) from s where classid = @classid
while exists (select 1 from s where classid = @classid and parentid <> 0)
begin

--如果直接写表名，没有问题
set @sql=' select '+@classid+' = b.classid , '+@re_str+'= ltrim(b.parentid) + '','' + '+@re_str+' from '+@tbTable+' a , '+@tbTable+' b where a.classid ='+@classid+' and a.parentid = b.classid'
exec (@sql)
end
end