通过以下两种方法可以查询数据库中所有表的名称、表中的数据行数、表占用空间等信息。如想知道目前数据库中存在哪些大数据表以及这些表占用空间的情况等信息时，就可以通过这两种方法查询得知。

一、查看表名和对应的数据行数
select a.name as ‘表名’,b.rows as ‘表数据行数’
from sysobjects a inner join sysindexes b
on a.id = b.id
where a.type = ‘u’
and b.indid in (0,1)
–and a.name not like ‘t%’
order by b.rows desc

二、查看表名和表占用空间信息
–判断临时表是否存在，存在则删除重建
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

select tabname as ‘表名’,rowsNum as ‘表数据行数’,reserved as ‘保留大小’,data as ‘数据大小’,index_size as ‘索引大小’,unused_size as ‘未使用大小’
from #tabName
–where tabName not like ‘t%’
order by cast(rowsNum as int) desc

–系统存储过程说明：

–sp_spaceused 该存储过程在系统数据库master下。
exec sp_spaceused ‘表名’ –该表占用空间信息
exec sp_spaceused –当前数据库占用空间信息