SQL Database Table Sizes

The following SQL command lists each table in a database and shows total row counts and disk spaced used.

SELECT 
  t.NAME AS TableName,
  s.Name AS SchemaName,
  p.rows AS RowCounts,
  SUM(a.total_pages) * 8 AS TotalSpaceKB, 
  SUM(a.used_pages) * 8 AS UsedSpaceKB, 
  (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB
FROM 
  sys.tables t
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
LEFT OUTER JOIN 
  sys.schemas s ON t.schema_id = s.schema_id
WHERE 
  t.NAME NOT LIKE 'dt%' 
  AND t.is_ms_shipped = 0
  AND i.OBJECT_ID > 255 
GROUP BY 
  t.Name, s.Name, p.Rows
ORDER BY 
  t.Name