size of all tables in database

--size of all tables in database

SELECT s.name AS SCHEMA_NAME,
       t.name AS OBJ_NAME,
       t.type_desc AS OBJ_TYPE,
       i.name AS indexName,
       SUM(p.rows) AS RowCounts,
       SUM(a.total_pages) AS TotalPages,
       SUM(a.used_pages) AS UsedPages,
       SUM(a.data_pages) AS DataPages,
       (SUM(a.total_pages) * 8) / 1024 AS TotalSpaceMB,
       (SUM(a.used_pages) * 8) / 1024 AS UsedSpaceMB,
       (SUM(a.data_pages) * 8) / 1024 AS DataSpaceMB
FROM sys.objects t
    INNER JOIN sys.schemas s
        ON t.schema_id = s.schema_id
    INNER JOIN sys.indexes i
        ON t.object_id = i.object_id
    INNER JOIN sys.partitions p
        ON i.object_id = p.object_id
           AND i.index_id = p.index_id
    INNER JOIN sys.allocation_units a
        ON p.partition_id = a.container_id
WHERE t.name NOT LIKE 'dt%'
      AND i.object_id > 255
      AND i.index_id <= 1
GROUP BY s.name,
         t.name,
         t.type_desc,
         i.object_id,
         i.index_id,
         i.name
ORDER BY SUM(a.total_pages) DESC;