select a.name as EsmTable, sum( b.max_length) * (select count(*) from [dbo].[Afi1FDocB] where SerialNumber = 1) as tulRecord
from sys.tables a inner join sys.columns b
on(b.object_id = object_id(a.name))
where a.name = 'Afi1FDocB'
group by a.name