Alter Index with online rebuild - SQL 2005

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This is an Alter Index script i made up from the one found in BOL and some other scripts we had. You need to create a table to hold the fragmentation data and it has a date column so you can track historical data. You can also add a db_mail part at the end to send you results.

This is version 1 and it scans all the tables. My next version is to have it scan only indexes in selected tables.

/* Declare Variables */
DECLARE @objectid int;
DECLARE @indexid int;
DECLARE @partitioncount bigint;
DECLARE @schemaname nvarchar(130); 
DECLARE @objectname nvarchar(130); 
DECLARE @indexname nvarchar(130); 
DECLARE @partitionnum bigint;
DECLARE @partitions bigint;
DECLARE @frag float;
DECLARE @command nvarchar(4000); 
  

-- Clear temp tables of old data   
--Truncate  TABLE table_index
delete physical_stats where 
datepart(d, date) = datepart(d, getdate()-30) and 
datepart(yy, date) = datepart(yy, getdate()) and
datepart(m, date) = datepart(m, getdate())


-- Run system view to gather fragmentation data and insert into table

INSERT into physical_stats ( database_id,
		object_id,
		index_id,
		partition_number,
		index_type_desc,
		alloc_unit_type_desc,
		index_depth,
		index_level,
		avg_fragmentation_in_percent,
		fragment_count,
		avg_fragment_size_in_pages,
		page_count,
		avg_page_space_used_in_percent,
		record_count,
		ghost_record_count,
		version_ghost_record_count,
		min_record_size_in_bytes,
		max_record_size_in_bytes,
		avg_record_size_in_bytes,
		forwarded_record_count
		)
select * from sys.dm_db_index_physical_stats (14, null, null, null, 'detailed')
update physical_stats 
set date = getdate() where date is null  
   
/* Prepare list of tables to run maintenance on  */  
SELECT
    object_id AS objectid,
    index_id AS indexid,
    partition_number AS partitionnum,
    avg_fragmentation_in_percent AS frag
INTO #work_to_do
FROM physical_stats where
datepart(d, date) = datepart(d, getdate()) and 
datepart(yy, date) = datepart(yy, getdate()) and
datepart(m, date) = datepart(m, getdate()) and 
avg_fragmentation_in_percent > 10.0 
AND index_id > 0

-- Declare the cursor for the list of partitions to be processed.
DECLARE partitions CURSOR FOR SELECT * FROM #work_to_do;

-- Open the cursor.
OPEN partitions;

-- Loop through the partitions.
WHILE (1=1)
    BEGIN;
        FETCH NEXT
           FROM partitions
           INTO @objectid, @indexid, @partitionnum, @frag;
        IF @@FETCH_STATUS < 0 BREAK;
        SELECT @objectname = QUOTENAME(o.name), @schemaname = QUOTENAME(s.name)
        FROM sys.objects AS o
        JOIN sys.schemas as s ON s.schema_id = o.schema_id
        WHERE o.object_id = @objectid;
        SELECT @indexname = QUOTENAME(name)
        FROM sys.indexes
        WHERE  object_id = @objectid AND index_id = @indexid;
        SELECT @partitioncount = count (*)
        FROM sys.partitions
        WHERE object_id = @objectid AND index_id = @indexid;

-- 10 is an arbitrary decision point at which to switch between reorganizing and rebuilding.
        IF @frag < 10.0
            SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REORGANIZE';
        IF @frag >= 10.0
            SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @schemaname + N'.' + @objectname + N' REBUILD with (online = on)' ;
        IF @partitioncount > 1
            SET @command = @command + N' PARTITION=' + CAST(@partitionnum AS nvarchar(10));
        EXEC (@command);
        PRINT N'Executed: ' + @command;
    END;

-- Close and deallocate the cursor.
CLOSE partitions;
DEALLOCATE partitions;

-- Drop the temporary table.
DROP TABLE #work_to_do;

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