这个存储过程为什么读不出数据啊？郁闷
CREATE PROCEDURE PrSerchTag
@tag varchar(20)
AS
declare @id int
declare @tagid int
--declare @bool char(4)
begin
if exists (select tagid from tagtable where tagname like '% '+@tag+ '% ')
begin

select @tagid = tagid from tagtable where tagname like '% '+@tag+ '% '
select @id= rizhiid from rizhitagtable where tagid =@tagid
select rizhiid,yonghuname,rizhititle,substring(rizhicontent,0,200)+ '...... ' as 'rizhicontent ',rizhitime,touchnum,yonghuid from rizhiview where rizhiid=@id
end
else
return (0)


end

[解决办法]
if exists (select tagid from tagtable where tagname like '% '+@tag+ '% ')
begin

.....
-->


if exists (select tagid from tagtable where tagname like '% '+@tag+ '% ')
begin

select 1 --加上这条，执行后看看有没有执行到这句。
.....
[解决办法]
select @tagid = tagid from tagtable where tagname like '% '+@tag+ '% '
select @id= rizhiid from rizhitagtable where tagid =@tagid

tagid应可能有多个值吧，能这样输给@tagid么？
rizhiid也有可能有多个值的,不能这样给@id输值.
[解决办法]
@tagid只能是最后的一个tagid的值
@id也只能是rizhiid的最后一个值
[解决办法]
@tagid,@id 只读出一个值，建议楼主写成游标
[解决办法]
similarly answer below:

HTTP://www.ebigear.com/Fund/PlayNews.php?NewsID=28340&ID=285885