CREATE PROCEDURE sp_totalsize as

SELECT o.name 'Table', SUM(c.length) 'Record size',
MAX (i.rows) '#of rows',
CONVERT (decimal (10, 4), SUM (c.length * i.rows)/(1024.00 * 1024.00)) 'Approx. size (MB)'

FROM sysobjects o, syscolumns c, sysindexes i
WHERE     o.id = c.id
AND  o.id = i.id
AND  (i.indid = 1 or i.indid = 0)
AND  o.type = 'U'
GROUP BY o.name
COMPUTE SUM (CONVERT (decimal (10,4), SUM (c.length * i.rows)/(1024.00 * 1024.00))) 

GO