execute isto para obter o tamanho por tabela:
/******************************************************************************
** File: “GetTableSpaceUsage.sql”
** Name: Get Table Space Useage for a specific schema
** Auth: Robert C. Cain
** Date: 01/27/2008
**
** Desc: Calls the sp_spaceused proc for each table in a schema and returns
** the Table Name, Number of Rows, and space used for each table.
**
** Called by:
** n/a – As needed
**
** Input Parameters:
** In the code check the value of @schemaname, if you need it for a
** schema other than dbo be sure to change it.
**
** Output Parameters:
** NA
*******************************************************************************/
/*—————————————————————————*/
/* Drop the temp table if it's there from a previous run */
/*—————————————————————————*/
if object_id(N'tempdb..[#TableSizes]') is not null
drop table #TableSizes ;
go
/*—————————————————————————*/
/* Create the temp table */
/*—————————————————————————*/
create table #TableSizes
(
[Table Name] nvarchar(128) /* Name of the table */
, [Number of Rows] char(11) /* Number of rows existing in the table. */
, [Reserved Space] varchar(18) /* Reserved space for table. */
, [Data Space] varchar(18) /* Amount of space used by data in table. */
, [Index Size] varchar(18) /* Amount of space used by indexes in table. */
, [Unused Space] varchar(18) /* Amount of space reserved but not used. */
) ;
go
/*—————————————————————————*/
/* Load the temp table */
/*—————————————————————————*/
declare @schemaname varchar(256) ;
-- Make sure to set next line to the Schema name you want!
set @schemaname = 'dbo' ;
-- Create a cursor to cycle through the names of each table in the schema
declare curSchemaTable cursor
for select sys.schemas.name + '.' + sys.objects.name
from sys.objects
, sys.schemas
where object_id > 100
and sys.schemas.name = @schemaname
/* For a specific table uncomment next line and supply name */
--and sys.objects.name = 'specific-table-name-here'
and type_desc = 'USER_TABLE'
and sys.objects.schema_id = sys.schemas.schema_id ;
open curSchemaTable ;
declare @name varchar(256) ; /* This holds the name of the current table*/
-- Now loop thru the cursor, calling the sp_spaceused for each table
fetch curSchemaTable into @name ;
while ( @@FETCH_STATUS = 0 )
begin
insert into #TableSizes
exec sp_spaceused @objname = @name ;
fetch curSchemaTable into @name ;
end
/* Important to both close and deallocate! */
close curSchemaTable ;
deallocate curSchemaTable ;
/*—————————————————————————*/
/* Feed the results back */
/*—————————————————————————*/
select [Table Name]
, [Number of Rows]
, [Reserved Space]
, [Data Space]
, [Index Size]
, [Unused Space]
from [#TableSizes]
order by [Table Name] ;
/*—————————————————————————*/
/* Remove the temp table */
/*—————————————————————————*/
drop table #TableSizes ;
tirado de Robert Caine blog
Este código é para o Microsoft SQL 2005 +