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Archive for December 15th, 2012

T-SQL Script to find the size of every index in the database

Posted by Sudarshan Narasimhan on December 15, 2012


I wrote this query to find the size of all indexes in the database for one of my customers. Thought I’d share this script with everyone. Cheers.

CREATE PROCEDURE uspIndexSizeinDB
AS 
-- Author: Sudarshan (TheSQLDude.com)
-- Data Created: Dec 15, 2012
-- Description: Calculate the SQL Server index size for all indexes in the current database
  BEGIN 
    DECLARE  @IndexSize BIGINT, 
             @IndexID   INT,
             @IndexName nvarchar(200),
             @IndexType nvarchar(50),
             @ObjectID  INT
     
    SET @IndexSize = 0
    
    create table #tmpresults (ObjName nvarchar(100), IndexID int, IndexName nvarchar(200),[IndexSize(MB)] int, IndexType nvarchar(50))
    
    DECLARE curIndex CURSOR  FOR 
    SELECT sysind.object_id, sysind.index_id, sysind.name, sysind.type_desc 
    FROM sys.indexes sysind 
    join sys.sysobjects sysobj
    on sysind.object_id = sysobj.id
    where sysind.type>0 and sysobj.type not in ('S','IT')
    order by sysobj.id asc
   
    OPEN curIndex 
     
    FETCH NEXT FROM curIndex 
    INTO @ObjectID, @IndexID, @IndexName, @IndexType
     
    WHILE (@@FETCH_STATUS = 0) 
      BEGIN 
        SELECT @IndexSize = sum(avg_record_size_in_bytes * record_count) 
        FROM   sys.dm_db_index_physical_stats(DB_ID(),@ObjectID, @IndexID, NULL, 'detailED') 
         
        insert into #tmpresults (ObjName, IndexID, IndexName, [IndexSize(MB)], IndexType)
        SELECT TableName = OBJECT_NAME(@ObjectID), 
               IndexID = @IndexID, 
               IndexName = @IndexName,
               [IndexSize(MB)] = CONVERT(DECIMAL(16,1),(@IndexSize / (1024.0 * 1024))), IndexType = @IndexType
         
        FETCH NEXT FROM curIndex 
        INTO @ObjectID, @IndexID, @IndexName, @IndexType
      END 
    CLOSE curIndex 
    DEALLOCATE curIndex 
    
    select UPPER(ObjName) as ObjectName, IndexID, IndexName, IndexType, [IndexSize(MB)]  from #tmpresults order by [IndexSize(MB)] desc
  END 
GO
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