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• SQL SERVER – Performance Comparison – INSERT TOP (N) INTO Table – Using Top with INSERT

  - by pinaldave

  Recently I wrote about SQL SERVER – INSERT TOP (N) INTO Table – Using Top with INSERT I mentioned about how TOP works with INSERT. I have mentioned that I will write about the performance in next article. Here is the performance comparison of the two options. It is clear that performance of the Insert TOP (N) [...]

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• SQL SERVER – Stored Procedure Optimization Tips – Best Practices

  - by pinaldave

  We will go over how to optimize Stored Procedure with making simple changes in the code. Please note there are many more other tips, which we will cover in future articles. Include SET NOCOUNT ON statement: With every SELECT and DML statement, the SQL server returns a message that indicates the number of affected rows [...]

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• SQLAuthority News – SQL Server 2008 R2 Update for Developers Training Kit (March 2010 Update)

  - by pinaldave

  SQL Server 2008 R2 offers an impressive array of capabilities for developers that build upon key innovations introduced in SQL Server 2008. The SQL Server 2008 R2 Update for Developers Training Kit is ideal for developers who want to understand how to take advantage of the key improvements introduced in SQL [...]

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• SQL SERVER – Force Index Scan on Table – Use No Index to Retrieve the Data – Query Hint

  - by pinaldave

  Recently I received the following two questions from readers and both the questions have very similar answers. 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 [...]

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• SQLAuthority News – SQL Server Technical Article – The Data Loading Performance Guide

  - by pinaldave

  The white paper describes load strategies for achieving high-speed data modifications of a Microsoft SQL Server database. “Bulk Load Methods” and “Other Minimally Logged and Metadata Operations” provide an overview of two key and interrelated concepts for high-speed data loading: bulk loading and metadata operations. After this background knowledge, white paper describe how these methods can be [...]

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• SQL SERVER – Quick Note of Database Mirroring

  - by pinaldave

  Just a day ago, I was invited at Round Table meeting at prestigious organization. They were planning to implement High Availability solution using Database Mirroring. During the meeting, I have made few notes of what was being discussed there. I just thought it would be interested for all of you know about it. Database Mirroring works [...]

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• SQL SERVER – Data and Page Compressions – Data Storage and IO Improvement

  - by pinaldave

  The performance of SQL Server is primarily decided by the disk I/O efficiency. Improving I/O definitely improves the performance. SQL Server 2008 introduced Data and Backup compression features to improve the disk I/O. Here, I will explain Data compression. Data compression implies the reduction in the disk space reserved by data. Therefore, data compression can be [...]

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• SQL SERVER – Checklist for Analyzing Slow-Running Queries

  - by pinaldave

  I am recently working on upgrading my class Microsoft SQL Server 2005/2008 Query Optimization and & Performance Tuning with additional details and more interesting examples. While working on slide deck I realized that I need to have one solid slide which talks about checklist for analyzing slow running queries. A quick search on my saved [...]

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• SQL SERVER – Introduction to Rollup Clause

  - by pinaldave

  In this article we will go over basic understanding of Rollup clause in SQL Server. ROLLUP clause is used to do aggregate operation on multiple levels in hierarchy. Let us understand how it works by using an example. Consider a table with the following structure and data: CREATE TABLE tblPopulation ( Country VARCHAR(100), [State] VARCHAR(100), City VARCHAR(100), [Population (in Millions)] INT ) GO INSERT INTO tblPopulation VALUES('India', 'Delhi','East Delhi',9 [...]

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• SQLAuthority News – Hyderabad Techies February Fever Feb 11, 2010 – Indexing for Performance

  - by pinaldave

  I recently presented in Hyderabad User Group on the subject of The Other Side of SQL Server Index: Advanced Solutions to Ancient Problem , you can read more about this event here SQLAuthority News – MUGH – Microsoft User Group Hyderabad – Feb 2, 2010 Session Review. I really had great time talking about Index [...]

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• SQL SERVER – INSERT TOP (N) INTO Table – Using Top with INSERT

  - by pinaldave

  During my recent training at one of the clients, I was asked regarding the enhancement in TOP clause. When I demonstrated my script regarding how TOP works along with INSERT, one of the attendees suggested that I should also write about this script on my blog. Let me share this with all of you and [...]

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• SQL SERVER- IF EXISTS(Select null from table) vs IF EXISTS(Select 1 from table)

  - by pinaldave

  Few days ago I wrote article about SQL SERVER – Stored Procedure Optimization Tips – Best Practices. I received lots of comments on particular blog article. In fact, almost all the comments are very interesting. If you have not read all the comments, I strongly suggest to read them. Click here to read the comments. The [...]

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• SQLAuthority News – Links to Book On Line – Data Mining Algorithms (Analysis Services – Data Mining)

  - by pinaldave

  I have quite often received request for the Data Mining Algorithms details. Book Online has wonderful resources for the same. I suggest to read them here. Data Mining Algorithms (Analysis Services – Data Mining) The data mining algorithm is the mechanism that creates a data mining model. To create a model, an algorithm first analyzes a set [...]

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• SQL SERVER – MAXDOP Settings to Limit Query to Run on Specific CPU

  - by pinaldave

  This is very simple and known tip. Query Hint MAXDOP – Maximum Degree Of Parallelism can be set to restrict query to run on a certain CPU. Please note that this query cannot restrict or dictate which CPU to be used, but for sure, it restricts the usage of number of CPUs in a single [...]

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• SQLAuthority News – Download Microsoft SQL Server JDBC Driver 3.0 CTP 1

  - by pinaldave

  Download the SQL Server JDBC Driver 3.0 CTP, a Type 4 JDBC driver that provides database connectivity through the standard JDBC application program interfaces (APIs) available in Java Platform, Enterprise Edition 5. In its continued commitment to interoperability, Microsoft has released a preview of the upcoming Java Database Connectivity (JDBC) driver. The SQL Server JDBC Driver [...]

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• SQLAuthority News – SQL SERVER 2008 R2 Pricing

  - by pinaldave

  I was recently asked question about SQL Server 2008 pricing. I have bookmarked official site here which lists the pricing. Official site: What’s New in SQL Server 2008 R2 Editions Editions Per Processor PricingRetail Per Server Plus CAL PricingRetail Parallel Data Warehouse $57,498 Not offered via Server CAL Datacenter $57,498 Not offered via Server CAL Enterprise $28,749 $13,969 with 25 CALs Standard $7,499 $1,849 with 5 CALs However, I have [...]

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• SQLAuthority News – MUGH – Microsoft User Group Hyderabad – Feb 2, 2010 Session Review

  - by pinaldave

  Earlier this month, I was very fortunate to visit Microsoft User Group Hyderabad lead by Hima Vindu Vejella. Hima is a very enthusiastic leader and kind person. I had a wonderful time meeting her as well her husband during my visit to Hyderabad. I had presented session on Index, which was well received. Brief information on [...]

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• SQLAuthority Book Review – Professional SQL Server 2008 Internals and Troubleshooting

  - by pinaldave

  Professional SQL Server 2008 Internals and Troubleshooting by Christian Bolton, Justin Langford, Brent Ozar, James Rowland-Jones, Steven Wort Link to Amazon (Worldwide) Link to Flipkart (India) Brief Review: Having a book on internal and associating that with real life is “almost” an impossible task. The reason for using the word “almost” is because this book has accomplished this [...]

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• SQLAuthority News – Microsoft SQL Server Migration Assistant 2008 for MySQL v1.0 CTP1

  - by pinaldave

  Microsoft SQL Server Migration Assistant (SSMA) 2008 is a toolkit that dramatically cuts the effort, cost, and risk of migrating from MySQL to SQL Server 2008 and SQL Azure. SSMA 2008 for MySQL v1.0 CTP1 provides an assessment of migration efforts as well as automates schema and data migration. Download Microsoft SQL Server Migration Assistant 2008 [...]

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• SQLAuthority News – Excellent Event – TechEd Sri Lanka – Feb 8, 2010

  - by pinaldave

  TechEd Sri Lanka was held at Waters Edge, Colombo between Feb 8 and Feb 10, 2010. It was one of the largest successful technical event in Sri Lanka. I was extremely surprised to how technically sound this event was and how excited the TechEd attendees were. I presented there on two different subject. They were very [...]

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• SQLAuthority News – SQL Server Modeling CTP – Nov 2009 Release 2 (formerly Oslo)

  - by pinaldave

  SQL Server Modeling (formerly code name “Oslo”) is a set of future technologies that provide significant productivity gains across the lifecycle of .NET applications by enabling developers, architects, and IT professionals to work together more effectively with SQL Server at the center of the application lifecycle. SQL Server Modeling CTP Nov 2009 Release 2 is a [...]

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• SQL SERVER – Recompile Stored Procedure at Run Time

  - by pinaldave

  I recently received an email from reader after reading my previous article on SQL SERVER – Plan Recompilation and Reduce Recompilation – Performance Tuning regarding how to recompile any stored procedure at run time. There are multiple ways to do this. If you want your stored procedure to always recompile at run time, you can add [...]

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• SQLAuthority News – Keeping Your Ducks in a Row

  - by pinaldave

  Last year during my visit to SQLAuthority News – SQL PASS Summit, Seattle 2009 – Day 2 I have received ducks from the event. Well during the same event I had learned from Jonathan Kehayias the saying of ‘Keeping Your Ducks in a Row‘. The most popular theory suggests that “ducks in a row” came [...]

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• SQL SERVER – Rollback TRUNCATE Command in Transaction

  - by pinaldave

  This is very common concept that truncate can not be rolled back. I always hear conversation between developer if truncate can be rolled back or not. If you use TRANSACTIONS in your code, TRUNCATE can be rolled back. If there is no transaction is used and TRUNCATE operation is committed, it can not be retrieved from [...]

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• SQL SERVER – Order of Columns in Update Statement Does not Matter

  - by pinaldave

  I recently received few comments that I have not written on simple subjects recently. In fact, this blog is dedicated to all those who are really learning SQL Server and almost all the articles and posts are posted here keeping this goal in mind. One of the questions in the email which requested to write [...]

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