Comments on: SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup – Part 2

By: SQL SERVER – Weekly Series – Memory Lane – #007 « SQL Server Journey with SQL Authority

Sat, 15 Dec 2012 01:31:33 +0000

[...] 1 | Part 2 | Part 3 | Part [...]

By: John Smith

John Smith — Wed, 12 Dec 2012 11:33:28 +0000

My question is its write to make one of the above index when we are using 10+ columns in particular statement?

By: SQL SERVER – Beginning New Weekly Series – Memory Lane – #002 « SQL Server Journey with SQL Authority

Sat, 10 Nov 2012 01:31:22 +0000

[...] are very relevant articles on this subject: Article 1 | Article 2 | Article [...]

By: irena

irena — Fri, 25 May 2012 14:17:04 +0000

I have one question is index size smaller in method 2?

By: Stuart Thomas

Stuart Thomas — Fri, 23 Mar 2012 11:51:07 +0000

Hi,
This is an awesome article. I came across to search method of non-clustered index on Google and I find this article on top. I obtained exact needs in this and now soon, I will be practical.
Thanks for providing such useful information.

By: Marko Parkkola

Marko Parkkola — Fri, 14 May 2010 06:51:28 +0000

Hi,

I’m not sure if I understood correctly. Did you meant…

CREATE NONCLUSTERED INDEX IX_Foo ON FOO (bar) INCLUDE (baz)

…that is there now a nonclustered index created on “baz” column?

No, there isn’t. Index is created only on “bar” column. It’s just plain normal nonclustered index.

But the data that’s in “baz” column is copied to TEMPDB and any read operation, that uses IX_Foo index, is done againts TEMPDB. If IX_Foo index is not used then the “baz” column is read from the actual data table.

By: Jaypal

Jaypal — Thu, 13 May 2010 13:33:39 +0000

I wanted to ask one question that is does the Include options to create covering index actually i.e. physically create non-clustered index on the column.

By: SQL SERVER – Four Posts on Removing the Bookmark Lookup – Key Lookup Journey to SQL Authority with Pinal Dave

Thu, 13 May 2010 01:31:12 +0000

[...] SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lo… [...]

By: Paul Baltadonis

Paul Baltadonis — Wed, 24 Feb 2010 22:22:39 +0000

I need some help…. I am not a DBA, and am just getting into this SQL thing. I have a query established, but it is returning HTML characters in two columns. How can you eliminate that inside of the query. I have pasted the query below for your review.

SELECT vWorkOrderReportRandle.WOOID, vWorkOrderReportRandle.WODateScheduled, vWorkOrderReportRandle.EquipDesc, vWorkOrderReportRandle.WOStatusDesc, vWorkOrderReportRandle.Type, vWorkOrderReportRandle.WOProblem, vWorkOrderReportRandle.WORepairsRequired, vWorkOrderReportRandle.WOLaborHoursEst, vWorkOrderReportRandle.WOCostAct, vWorkOrderReportRandle.WOCostEst, vWorkOrderReportRandle.WOKit, vWorkOrderReportRandle.Initiator, vWorkOrderReportRandle.Assignee, vWorkOrderReportRandle.WOStatus, vWorkOrderReportRandle.Requestor, vWorkOrderReportRandle.FullPath
FROM HamptonMaintenance.dbo.vWorkOrderReportRandle vWorkOrderReportRandle

By: Boy95

Boy95 — Fri, 23 Oct 2009 11:17:38 +0000

In addition, the applicant participates in multiple national, state, and local associations to gather and share best practices and learning. ,

By: SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup Journey to SQL Authority with Pinal Dave

Mon, 12 Oct 2009 02:50:56 +0000

[...] SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lo… [...]

By: SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup – Part 3 Journey to SQL Authority with Pinal Dave

Mon, 12 Oct 2009 02:50:52 +0000

[...] SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lo… [...]

By: Patricio

Patricio — Thu, 08 Oct 2009 14:50:25 +0000

Hi Pinal,

Great post, but how do i remove Bookmark lookup (table with clustered index) where it is not possible create index with include columns. Or is it possible?

thanks!!

By: Krunal

Krunal — Thu, 08 Oct 2009 13:32:32 +0000

@Rajendra

What I understand upto reading 1 time only is

select distinct month from the year 2009 (january to this month)

and then use CURSOR…

I think this might help you..

By: rajendra

rajendra — Thu, 08 Oct 2009 11:43:37 +0000

hi every one,
I need a query, and the requirement is–

Count the number of customers that shopped 10 months ago, but have not returned since.
(example: For October , count total number of customers that shopped in January. Then count the number of those customers that DID not return Feb-Sept. )

My table name is customerInvoices, consists invoiceId, customerId and invoiceDate.

I wrote the fallowing query for the october month( means the customer should have an invoice in january and he should not have any invoice in the next 8 months(feb-sep)).

– To get lapsed customers of october
select month(GETDATE())AS [Month],count(ci.customerId) AS [Number of Lapsed customers] from CustomerInvoices ci
where YEAR(ci.invoiceDate)=2009
and month(ci.invoiceDate)=MONTH(DATEADD(month,-09,getdate()))
and customerID not in
(
select customerID from customerInvoices
where (invoiceDate)>
( CAST(
(CAST
(month(DATEADD(MONTH,-08,GETDATE())) AS CHAR(2))
+’-01-’+
CAST(YEAR(ci.invoiceDate) AS CHAR(4))) AS date)
)
and (invoiceDate)<
(
CAST(
(CAST
(month(DATEADD(MONTH,-01,GETDATE())) AS CHAR(2))
+'-01-'+
CAST(YEAR(ci.invoiceDate) AS CHAR(4))) AS date)
)
)

It's working perfectly for the october month, but i want to display the result from january to october, how can i include other months also…

If anyone knows this plz help,
thank you.

By: Chintan Shah

Chintan Shah — Thu, 08 Oct 2009 06:08:12 +0000

Hi Pinal,

Is it good to create one of the above index when we are using 20+ columns in select statement?