SQL Server查看所有表大小，所占空间

create table #Data(name varchar(100),row varchar(100),reserved varchar(100),data varchar(100),index_size varchar(100),unused varchar(100))

declare @name varchar(100)
declare cur cursor for
select name from sysobjects where xtype='u' order by name
open cur
fetch next from cur into @name
while @@fetch_status=0
begin
insert into #data
exec sp_spaceused @name
print @name

fetch next from cur into @name
end
close cur
deallocate cur

create table #DataNew(name varchar(100),row int,reserved int,data int,index_size int,unused int)

insert into #dataNew
select name,convert(int,row) as row,convert(int,replace(reserved,'KB','')) as reserved,convert(int,replace(data,'KB','')) as data,
convert(int,replace(index_size,'KB','')) as index_size,convert(int,replace(unused,'KB','')) as unused from #data

select * from #dataNew order by data desc

------

--主要原理： 
exec sp_spaceused '表名' --取得表占用空間 
exec sp_spaceused ''--數據庫所有空間 

还有一个简单的办法

SELECT   a.name, b.rows
FROM      sysobjects AS a INNER JOIN
                 sysindexes AS b ON a.id = b.id
WHERE   (a.type = 'u') AND (b.indid IN (0, 1))
ORDER BY b.rows DESC