sql server , total row count in database

SELECT 
      SCHEMA_NAME(t.[schema_id]) AS [table_schema]          
    , OBJECT_NAME(p.[object_id]) AS [table_name]
    , SUM(p.[rows]) AS [row_count]
FROM [sys].[partitions] p    
INNER JOIN [sys].[tables] t ON p.[object_id] = t.[object_id]
WHERE p.[index_id] < 2
GROUP BY p.[object_id] ,t.[schema_id]    
ORDER BY row_count DESC