SQL server 查询数据库中所有的表名及行数

select a.name,b.rows
from sysobjects as ainner join sysindexes as bon a.id = b.id
where (a.type = 'u')and (b.indid in (0, 1))  and  b.rows<50 and  b.rows>20
order by a.name, b.rows desc;