SQL计算数据库表占用的真实空间大小

最近客户的数据库暴涨,一开始找不到原因,用sql查询表的空间大小,结果之前用的sql语句只能查询除了text,image外的字段大小.搞得一时间混乱不堪.后来咨询了大师们,找到用sp_spaceused这个系统函数可以查询表的真实大小,包含text等字段.sql如下:

declare @id            NVARCHAR(100)
create table #spt_space
(
[name]            NVARCHAR(50) null,
[rows]          int null,
[reserved]       NVARCHAR(50) null,
[data]         NVARCHAR(50) null,
[index_size]        NVARCHAR(50) null,
[unused]         NVARCHAR(50) null
)

set nocount on

declare c_tables cursor for
select name from sysobjects where xtype = 'U'

open c_tables fetch next from c_tables into @id

while @@fetch_status = 0
begin
/* Code from sp_spaceused */
insert into #spt_space ([name],[rows],reserved,data,index_size,unused)
EXEC sp_spaceused @id
fetch next from c_tables   into @id

end
SELECT * FROM(
SELECT *,CAST(REPLACE(reserved,'KB','') AS INT) AS reservedindex FROM #spt_space
) c
order by c.reservedindex desc

drop table #spt_space
close c_tables
deallocate c_tables