SQL 查询数据表大小

if exists(select 1 from tempdb..sysobjects where id=object_id('tempdb..#tabName') and xtype='u')
drop table #tabName
go
create table #tabName(
tabname varchar(100),
rowsNum varchar(100),
reserved varchar(100),
data varchar(100),
index_size varchar(100),
unused_size 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 #tabName
exec sp_spaceused @name
--print @name

fetch next from cur into @name
end
close cur
deallocate cur
-- 已经经过优化
select tabname as '表名',rowsNum as '表数据行数',reserved as '保留大小',convert(int,SUBSTRING(data,0,LEN(data)-2)) size, data as '数据大小',index_size as '索引大小',unused_size as '未使用大小'
from #tabName ORDER BY size desc