Query to check Size of tables

Hi All,

We when planned to delete some unused tables and also to know how much some of tables consuming the space, we needed to have a quick on table size.

Then team approached me to write a quick query to know the table name and its size.

The query to calculate size of table in given database is as follows:

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 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

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