sql查看所有表大小的方法

declare @id int
declare @type character(2) 
declare @pages int 
declare @dbname sysname
declare @dbsize dec(15,0)
declare @bytesperpage dec(15,0)
declare @pagesperMB dec(15,0)

create table #spt_space
(
 [objid] int null,
 [rows] int null,
 [reserved] dec(15) null,
 [data] dec(15) null,
 [indexp] dec(15) null,
 [unused] dec(15) null
)
set nocount on
-- Create a cursor to loop through the user tables
declare c_tables cursor for
select id 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 (objid, reserved)
 select objid = @id, sum(reserved)
 from sysindexes
 where indid in (0, 1, 255) and id = @id 
 select @pages = sum(dpages)
 from sysindexes
 where indid < 2
 and id = @id select @pages = @pages + isnull(sum(used), 0)
 from sysindexes
 where indid = 255 and id = @id update #spt_space set data = @pages
 where objid = @id /* index: sum(used) where indid in (0, 1, 255) - data */ update #spt_space
 set indexp = (select sum(used)
 from sysindexes
 where indid in (0, 1, 255)
 and id = @id) - data
 where objid = @id /* unused: sum(reserved) - sum(used) where indid in (0, 1, 255) */
 update #spt_space
 set unused = reserved - (
 select sum(used)
 from sysindexes
 where indid in (0, 1, 255) and id = @id
 )
 where objid = @id update #spt_space set [rows] = i.[rows]
 from sysindexes i
 where i.indid < 2 and i.id = @id and objid = @id  fetch next from c_tables into @id
end
select TableName = (select left(name,60) from sysobjects where id = objid),
 [Rows] = convert(char(11), rows),
 ReservedKB = ltrim(str(reserved * d.low / 1024.,15,0) + ' ' + 'KB'),
 DataKB = ltrim(str(data * d.low / 1024.,15,0) + ' ' + 'KB'),
 IndexSizeKB = ltrim(str(indexp * d.low / 1024.,15,0) + ' ' + 'KB'),
 UnusedKB = ltrim(str(unused * d.low / 1024.,15,0) + ' ' + 'KB')
from #spt_space, master.dbo.spt_values d
where d.number = 1
and d.type = 'E'
order by reserved desc
drop table #spt_space
close c_tables
deallocate c_tables

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