Solved

Optimizing TSQL query

Posted on 2006-06-21
5
398 Views
Last Modified: 2012-05-05
Hello,
I am running a query which takes about one hour.Can any one help me optimize it.
Here is the query:

Select * into #TAD  from
OPENQUERY(DWDB, 'select DW_PR_SVC_LOAN_ID,DELQ_PRIN_AMT
as Total_Amt_Due from DW_PR_SVC_LOAN_MOD ')

Update  tbl_MaestroCampaignList set TotalAmountDue = #TAD.Total_Amt_Due
from (tbl_MaestroCampaignList inner join #TAD
on tbl_MaestroCampaignList.DW_PR_SVC_LOAN_ID = #TAD.DW_PR_SVC_LOAN_ID)
where
datediff(day,GetDate(),campaignDate)=0 and CampaignName ='FirstLienPreFCL'

I have to basically calculate Total Amount only for the loans in tbl_MaestroCampaignList .But I have to get these values from Datawarehouse table which has about a million loans. How to optimize it.
Thanks  bunch
0
Comment
Question by:justin11
  • 2
5 Comments
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 16951532
what takes the time
the select into
or the update ?

which version of sql server?

why isn't the maestrocampaignlist in the warehouse?

why do you need to  datediff on campaigndate?
0
 
LVL 28

Expert Comment

by:imran_fast
ID: 16952152
create this index it will speed upd the process a bit.
0
 
LVL 28

Accepted Solution

by:
imran_fast earned 500 total points
ID: 16952160
create this index it will speed up the process a bit.

create nonclustered index ix_tbl_MaestroCampaignList_01 on tbl_MaestroCampaignList(CampaignName,DW_PR_SVC_LOAN_ID)
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction In my previous article (http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/SSIS/A_9150-Loading-XML-Using-SSIS.html) I showed you how the XML Source component can be used to load XML files into a SQL Server database, us…
Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
Via a live example, show how to shrink a transaction log file down to a reasonable size.
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question