Performance tuning - sql-server-2008

Question

I have a performane problem. My manager said me to tune a select statement.
We are having a table
SELECT [AcctDetailReportId]
,[WorkOrderEneteredDate]
,[LocationName]
,[LocationNumber]
,[District]
,[CostCenter]
,[GLCode]
,[WorkType]
,[RequestType]
,[RequestCode]
,[ServiceLocation]
,[Cause]
,[Remedy]
,[RequestDescription]
,[CreatedBy]
,[Priority]
,[WorkOrderNumber]
,[Status]
,[DNE]
,[InvoiceNumber]
,[VendorCode]
,[VendorName]
,[Quote1]
,[Quote2]
,[Invoiceid]
,[InvoiceSubmittedDate]
,[WorkComplete]
,[TotalLaborCost]
,[TotalMaterialCost]
,[SalesTax]
,[InvoiceTotal]
,[WarrantyExpirationDate]
,[UnderWarranty]
,[MallName]
--,[AddressID]
--,[CommunicationID]
--,[ContactID]
--,[StateID]
--,[CountryID]
--,[LanguageID]
--,[AddressTypeID]
,[Line1]
,[Line2]
,[City]
,[Province]
,[Region]
,[ZipPostalCode]
--,[DeactivateDateTime]
--,[DeactivateUser]
,[CreateDateTime]
,[CreateUser]
--,[PreviousRecordID]
,[LocationState]
,[CheckNumber]
,[CheckDate]
FROM [Darden].[dbo].[RPT_AccountDetailReport]
GO"
which contains of 29000 records. it takes about 2 mins to retrieve data using Clustered Index Scan..
Table has only one Clustered Index.
Requirement is to get all records in a table and all columns.. But in reduced time..
Can any one help me on that...
Thanks,
Karthik

Answer 1

Have you reorganized/rebuilt your index(s) the script below will scripts to re/create all the indexes for a table where i.name = '%what ever you put here%'. There are a bunch of lines below that are remmed out that I have used in the past.
SELECT
--stats.object_id AS objectid,
--QUOTENAME(s.name) AS schemaname,
--stats.index_id AS indexid,
i.name AS index_name,
--stats.partition_number AS partitionnum,
stats.avg_fragmentation_in_percent AS frag,
stats.page_count,
QUOTENAME(o.name) AS objectname,
CASE
when stats.avg_fragmentation_in_percent < 30 then 'Reorganize'
when stats.avg_fragmentation_in_percent > 30 then 'Rebuild'
END AS 'action_to_take',
CASE
when stats.avg_fragmentation_in_percent < 30 then 'ALTER INDEX '+i.name+ ' ON ' +DB_NAME()+'.'+QUOTENAME(s.name)+'.'+QUOTENAME(o.name)+' REORGANIZE;'
when stats.avg_fragmentation_in_percent > 30 then 'ALTER INDEX '+i.name+ ' ON ' +DB_NAME()+'.'+QUOTENAME(s.name)+'.'+QUOTENAME(o.name)+' REBUILD;'
END AS 'Statement'
FROM
sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL , NULL, NULL) as stats,
sys.objects AS o,
sys.schemas AS s,
sys.indexes AS i
WHERE o.object_id = stats.object_id
AND s.schema_id = o.schema_id
AND i.object_id = stats.object_id
AND i.index_id = stats.index_id
AND i.name is not null and i.name not like '%missing index%'
AND stats.avg_fragmentation_in_percent >= 10.0
--AND stats.page_count >= 5000
--AND stats.index_id > 0
--and i.name like '%880%'
ORDER BY action_to_take,stats.avg_fragmentation_in_percent desc,stats.page_count desc
Or you can click on Display [estimated] Execution plan & SMS will generate any needed indexes.
HTH,
LarryR....