use <database_name>

SELECT tn.[name] AS [Table name], ix.[name] AS [Index name],
SUM(sz.[used_page_count]) * 8 AS [Index size (KB)]
FROM sys.dm_db_partition_stats AS sz
INNER JOIN sys.indexes AS ix ON sz.[object_id] = ix.[object_id] 
AND sz.[index_id] = ix.[index_id]
INNER JOIN sys.tables tn ON tn.OBJECT_ID = ix.object_id
GROUP BY tn.[name], ix.[name]
ORDER BY 3 desc


  • Column with varchar(max) column type will take up a lot of space and take longer to create.
  • More columns the index cover (include), the more index space it will take up.
  • The Non-cluster Index can use up as much space as Clustered Index if the Non-cluster index includes all the columns in the table.


Last modified: May 27, 2023



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