Как уменьшить размер БД.

DECLARE @pagesizeKB int
SELECT @pagesizeKB = low / 1024 FROM master.dbo.spt_values
WHERE number = 1 AND type = 'E'
 
SELECT
  table_name = OBJECT_NAME(o.id),
  rows = i1.rowcnt,
  reservedKB = (ISNULL(SUM(i1.reserved), 0) + ISNULL(SUM(i2.reserved), 0)) * @pagesizeKB,
  dataKB = (ISNULL(SUM(i1.dpages), 0) + ISNULL(SUM(i2.used), 0)) * @pagesizeKB,
  index_sizeKB = ((ISNULL(SUM(i1.used), 0) + ISNULL(SUM(i2.used), 0))
    - (ISNULL(SUM(i1.dpages), 0) + ISNULL(SUM(i2.used), 0))) * @pagesizeKB,
  unusedKB = ((ISNULL(SUM(i1.reserved), 0) + ISNULL(SUM(i2.reserved), 0))
    - (ISNULL(SUM(i1.used), 0) + ISNULL(SUM(i2.used), 0))) * @pagesizeKB
FROM sysobjects o
LEFT OUTER JOIN sysindexes i1 ON i1.id = o.id AND i1.indid < 2
LEFT OUTER JOIN sysindexes i2 ON i2.id = o.id AND i2.indid = 255
WHERE OBJECTPROPERTY(o.id, N'IsUserTable') = 1 --same as: o.xtype = 'IsView'
OR (OBJECTPROPERTY(o.id, N'IsView') = 1 AND OBJECTPROPERTY(o.id, N'IsIndexed') = 1)
GROUP BY o.id, i1.rowcnt
ORDER BY 3 DESC

select t.name as TableName, SUM(u.total_pages) * 8 / 1024 as SizeMB
from sys.tables as t
inner join sys.partitions as p on t.object_id = p.object_id
inner join sys.allocation_units as u on p.partition_id = u.container_id
group by t.name
order by SizeMB DESC