统计数据库中表大小

use testdb go if object_id('tempdb.dbo.#tablespaceinfo','U') is not null   drop table #tablespaceinfo create table #tablespaceinfo (       nameinfo varchar(555),       rowsinfo bigint,       reserved varchar(255),       datainfo varchar(255),       index_size varchar(255),       unused varchar(255)   )     DECLARE @tablename varchar(255);     DECLARE Info_cursor CURSOR FOR     SELECT [name] FROM sys.tables WHERE type='U';     OPEN Info_cursor   FETCH NEXT FROM Info_cursor INTO @tablename     WHILE @@FETCH_STATUS = 0   BEGIN     insert into #tablespaceinfo exec sp_spaceused @tablename       FETCH NEXT FROM Info_cursor       INTO @tablename   END   CLOSE Info_cursor   DEALLOCATE Info_cursor     if object_id('tempdb.dbo.#tab','U') is not null   drop table #tab SELECT  nameinfo  ,rowsinfo  ,cast(replace(reserved,' KB','') as bigint)/1024 "reserved(MB)"  ,cast(replace(datainfo,' KB','') as bigint)/1024 "datainfo(MB)"  ,cast(replace(index_size,' KB','') as bigint)/1024 "index_size(MB)"  ,cast(replace(unused,' KB','') as bigint)/1024 "unused(MB)" into #tab FROM #tablespaceinfo   ORDER BY Cast(Replace(reserved,'KB','') as INT) DESC