Seeing Table Sizes in SQL Server

Hello to everyone,

In this article, I will give information about how to see table sizes in SQL Server.

In SQL Server you may want to see table sizes in some cases.

You can easily do this using the code below.

SELECT t.name AS TableName,
       s.name AS SchemaName,
       p.rows,
       SUM(a.total_pages) * 8 AS TotalSpaceKB,
       CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS TotalSpaceMB,
       SUM(a.used_pages) * 8 AS UsedSpaceKB,
       CAST(ROUND(((SUM(a.used_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS UsedSpaceMB,
       (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB,
       CAST(ROUND(((SUM(a.total_pages) - SUM(a.used_pages)) * 8) / 1024.00, 2) AS NUMERIC(36, 2)) 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,
         t.name;

When you run the above code, you will see a result similar to the one below.

As can be seen, the table dimensions have been seen.

Good luck to everyone in business and life.