Andrea Azzola

Technology, Personal Development and Financial Independence

Get Size of Tables with SQL Server

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A snippet for getting the size for all tables in a SQL Server database that might prove useful for:

  • Get a better understanding where most of your data is going
  • Find database bottlenecks
  • Free up disk space
  • Reducing maintenance cost
WITH table_space_usage (schema_name, table_name, used, reserved, ind_rows, tbl_rows)
AS (SELECT s.Name, o.Name, p.used_page_count * 8, p.reserved_page_count * 8, p.row_count, 
  CASE WHEN i.index_id in ( 0, 1 ) THEN p.row_count ELSE 0 END
  FROM sys.dm_db_partition_stats p
  INNER JOIN sys.objects as o ON o.object_id = p.object_id
  INNER JOIN sys.schemas as s ON s.schema_id = o.schema_id
  LEFT OUTER JOIN sys.indexes as i on i.object_id = p.object_id 
    and i.index_id = p.index_id
  WHERE o.type_desc = 'USER_TABLE' and o.is_ms_shipped = 0
)

SELECT t.schema_name, t.table_name, sum(t.used) as used_in_kb, 
  sum(t.reserved) as reserved_in_kb, sum(t.tbl_rows) as rows
FROM table_space_usage as t
GROUP BY t.schema_name , t.table_name 
ORDER BY used_in_kb desc
Categories: Big dataSQL Server