Size of all tables in database

In order to identify size and number of records in table following options can be used :

• Query
• Use the following query to identify the size of tables

SELECT 

    t.NAME AS TableName,

    s.Name AS SchemaName,

    p.rows AS RowCounts,

    ((SUM(a.total_pages) * 8) / 1024) AS TotalSpaceMB, 

    (((SUM(a.total_pages) * 8) / 1024) / 1024) AS TotalSpaceGB, 

    ((SUM(a.used_pages) * 8) / 1024) AS UsedSpaceMB, 

    (((SUM(a.total_pages) - SUM(a.used_pages)) * 8) / 1024) AS UnusedSpaceMB

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 

    TotalSpaceMB DESC

• Standard Database reports
• If you are using SQL Server Management Studio (SSMS), instead of running a query you can run a standard report. 
1. Right click on the databass
2. Navigate to Reports > Standard Reports > Disk Usage By Top Tables