Comments on: SQL SERVER – Force Index Scan on Table – Use No Index to Retrieve the Data – Query Hint http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/ SQL, SQL Server, MySQL, Big Data and NoSQL Wed, 19 Jun 2013 08:01:41 +0000 hourly 1 http://wordpress.com/ By: SQL SERVER – Weekly Series – Memory Lane – #020 | SQL Server Journey with SQL Authority http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-438058 Sat, 16 Mar 2013 01:30:43 +0000 http://blog.sqlauthority.com/?p=8167#comment-438058 [...] Force Index Scan on Table – Use No Index to Retrieve the Data – Query Hint In this blog post I tried to answer two of the very important questions I keep on encountering with related to Indexing. Question 1: I have a unique requirement where I do not want to use any index of the table; how can I achieve this? Question 2: Currently my table uses clustered index and does seek operation; how can I convert seek to scan? [...]

]]> By: 7876322056 http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-152852 Tue, 02 Aug 2011 18:10:29 +0000 http://blog.sqlauthority.com/?p=8167#comment-152852 Can I used WITH (INDEX(0)) on INSERT to simulate the performance degradation index cause on INSERT

]]> By: Panos http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-82364 Fri, 30 Jul 2010 15:23:02 +0000 http://blog.sqlauthority.com/?p=8167#comment-82364 I can confirm that I had a simmilar issue. A quite complex query that I thought was running fast enough. By mistake a dropped the index in one of the tables and then run in half the time. I now have a with (INDEX(0)) to not use any index on that table and does a table scan.

]]> By: Jason http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-63341 Fri, 19 Mar 2010 19:29:51 +0000 http://blog.sqlauthority.com/?p=8167#comment-63341 Use reverse(reverse(‘string’)) to eliminate index options. Substring would probably do it too but don’t have time to test.

]]> By: John McLusky http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-62959 Mon, 15 Mar 2010 12:08:20 +0000 http://blog.sqlauthority.com/?p=8167#comment-62959 In what kind of scenario would you want to deliberately not use any index on a table? I’m just not sure what the use of this trick is.

In fact, in your examples the query cost when avoiding the index is quite a bit worse than with the index – an example where it reduced might have been more convincing.

]]> By: Feodor Georgiev http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-62810 Fri, 12 Mar 2010 11:15:08 +0000 http://blog.sqlauthority.com/?p=8167#comment-62810 Hi Pinal,
thank you for the great article! I would, however, recommend to your readers another great article on using HINTS. http://www.brentozar.com/archive/2010/03/2-features-of-sql-server-you-should-avoid/

]]> By: Paresh Prajapati http://blog.sqlauthority.com/2010/03/11/sql-server-force-index-scan-on-table-use-no-index-to-retrieve-the-data-query-hint/#comment-62702 Thu, 11 Mar 2010 06:52:29 +0000 http://blog.sqlauthority.com/?p=8167#comment-62702 Hi Pinal,

In second example of using “where productNumber = ‘CR-7833′ “.
And it using the seek on nonclustered index and another one using scan clusteted index.

Is it possible to use seek Clustered index with same query?

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