Script: To find the size of the tables in a database

SELECT
table_name = SCHEMA_NAME(o.[schema_id]) + '.' + o.name

, data_size_mb = CAST(do.pages * 8. / 1024 AS DECIMAL(8,4))

FROM sys.objects o

JOIN (




SELECT
p.[object_id]

, total_rows = SUM(p.[rows])

, total_pages = SUM(a.total_pages)

, usedpages = SUM(a.used_pages)

, pages = SUM(




CASE
WHEN it.internal_type IN (202, 204, 207, 211, 212, 213, 214, 215, 216, 221, 222) THEN 0

WHEN a.[type]! = 1 AND p.index_id < 2 THEN a.used_pages

WHEN p.index_id < 2 THEN a.data_pages ELSE 0




END
)
FROM sys.partitions p

JOIN sys.allocation_units a ON p.[partition_id] = a.container_id

LEFT JOIN sys.internal_tables it ON p.[object_id] = it.[object_id]

GROUP BY p.[object_id]

) do ON o.[object_id] = do.[object_id]

WHERE o.[type] = 'U'