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Articles with tag Indexing Rss

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<< Newer    Items 21 to 40 of 183    Older >>

Overview of the Different In-Memory OLTP Index Types

In-Memory table or what Microsoft refers to as In-Memory OLTP, or Hekaton is a new type of table is available with SQL Server 2014. In this article Greg Larsen discusses the different types of indexes you can place on your In-Memory tables, and how those indexes support different search criteria.  Read more...
By Additional Articles 2013/11/13 | Source: Database Journal | Category: in-memory oltp
Rating: (not yet rated)  Rate this |   Briefcase | 2,378 reads

Free eBook: 45 Database Performance Tips for Developers

As a developer, if you need to go into the database and write queries, design tables, or determine the configuration of your SQL Server Systems, these tips should help make sure you're not unnecessarily sacrificing database performance. This eBook has 45 easy tips to improve the performance of your indexes and T-SQL queries, and hunt down problems within ORM tools and database design.   Read more...
By Press Release 2014/01/02 (first published: 2013/11/04) | Source: Redgate | Category: tips
Rating:  Rate this |   Briefcase | 16,119 reads

Implementing, loading and optimizing a Type 2 Slowly Changing Fact Table

This article shows how to implement a Slowly Changing Facts Table, how to overcome the problems encountered when using the MERGE statement to process the data and suggest a minimal set of indexes to aid data loading and quering.   Read more...
Rating: |  Discuss |   Briefcase | 5,587 reads

How efficient is your covered index?

Observing an index seek utilizing a composite index within SQL execution plan might be more than meets the eye – you should look again.  Read more...
By Simon Liew 2013/08/12 | Source: | Category: covering index
Rating: |  Discuss |   Briefcase | 8,401 reads

Tables and Clustered Indexes Part 2

A table does not so much 'have' a clustered index as a table 'is' a clustered index.  Read more...
By Hakim Ali 2013/07/22 | Source: | Category: clustered index
Rating: |  Discuss |   Briefcase | 6,400 reads

SQL Server: How Important Are Index Statistics

In this article Greg Larsen will show you how to identify when your index statistics were updated last, what method was used to gather statistics, and how to update your statistics.  Read more...
By Additional Articles 2013/07/11 | Source: Database Journal | Category: indexing
Rating: (not yet rated)  Rate this |   Briefcase | 2,896 reads

Column Order in an Index

This short article shows the importance of order of columns in an index.  Read more...
By Sarvesh Singh 2013/07/05 (first published: 2010/11/23) | Source: | Category: indexing
Rating: |  Discuss |   Briefcase | 20,578 reads

Stairway to SQL Server Indexes: Level 1, Introduction to Indexes

Indexes are the database objects that enable SQL Server to satisfy each data access request from a client application with the minimum amount of effort, resulting in the maximum performance of individual requests while also reducing the impact of one request upon another. Prerequisites: Familiarity with the following relational database concepts: Table, row, primary key, foreign key  Read more...
By David Durant 2014/11/05 (first published: 2011/02/17) | Source: | Category: stairway series
Rating: |  Discuss |   Briefcase | 55,481 reads

HASHBYTES: Is CHECKSUM really required?

When compared with HASHBYTES, CHECKSUM, has a number of drawbacks. Hence, a question that comes up is: Is Checksum really required? In this article, I attempt to answer that question.  Read more...
By Nakul Vachhrajani 2013/03/27 | Source: | Category: t-sql
Rating: |  Discuss |   Briefcase | 6,837 reads

Precision Indexing: Basics of Selective XML Indexes in SQL Server 2012

Seldom has a SQL Server Service pack had such an effect on database development as when SQL Server 2012 SP1 introduced selective XML indexes. These transform the practicality of querying large amounts of XML data. Seth Delconte demonstrates how and why this feature makes all the difference.   Read more...
By Additional Articles 2013/02/06 | Source: SimpleTalk | Category: indexing
Rating: (not yet rated)  Rate this |   Briefcase | 2,124 reads

SQL Server Performance Tuning – Index Tuning

In earlier installments of this series we looked at T-SQL Performance optimizations along with different T-SQL practices, we can now turn our attention to the second part of this series which is index Tuning  Read more...
By Additional Articles 2013/01/30 | Source: SQL Server Performance | Category: indexing
Rating:  Rate this |   Briefcase | 4,816 reads

Stairway to SQL Server Indexes: Level 3, Clustered Indexes

Now that we've seen the basics of indexing, and taken a deeper dive into Nonclustered Indexes, this Level will focus on searching the table, which will, in turn, will lead us to a discussion of clustered indexes.  Read more...
By David Durant 2013/01/25 (first published: 2011/06/22) | Source: | Category: stairway series
Rating: |  Discuss |   Briefcase | 25,577 reads

Hypothetical Indexes on SQL Server

Sometimes, you have to test out alternative indexing strategies, but the task of creating the candidate indexes would just take too long. Is there another way? Well, yes, why not use the same method the DTA (Database Tuning Advisor) uses, and take the tedium out of the job.  Read more...
By Additional Articles 2013/01/22 | Source: SimpleTalk | Category: indexing
Rating:  Rate this |   Briefcase | 3,212 reads

Review Your Indexing

Today Steve Jones reminds us that we should analyze and re-evalute our indexing strategy on a regular basis.  Read more...
By Steve Jones 2012/11/26 | Source: | Category: editorial
Rating: (not yet rated) |  Discuss |   Briefcase | 278 reads

Partitioned Tables, Indexes and Execution Plans: a Cautionary Tale

Table partitioning is a blessing in that it makes large tables that have varying access patterns more scalable and manageable, but it is a mixed blessing. It is important to understand the down-side before using table partitioning.  Read more...
By Additional Articles 2012/11/08 | Source: SimpleTalk | Category: partition table
Rating: (not yet rated)  Rate this |   Briefcase | 3,999 reads

Tune Your Indexing Strategy with SQL Server DMVs

SQL Server Indexes need to be effective. It is wrong to have too few or too many. The ones you create must ensure that the workload reads the data quickly with a minimum of I/O. As well as a sound knowledge of the way that relational databases work, it helps to be familiar with the Dynamic Management Objects that are there to assist with your indexing strategy.  Read more...
By Additional Articles 2012/10/23 | Source: SimpleTalk | Category: indexing
Rating:  Rate this |   Briefcase | 3,728 reads

Getting Started with the New Column Store Index of SQL Server 2012

Column Store Index, a new feature in SQL Server 2012, improves performance of data warehouse queries several folds. Arshad Ali shows you how to create column store index, and how to use index query hint to include or exclude a column store index.  Read more...
By Additional Articles 2012/10/09 | Source: Database Journal | Category: sql server 2012
Rating: (not yet rated)  Rate this |   Briefcase | 2,927 reads

Fragmentation Fear

Index fragmentation can certainly cause performance problems, but should it really dictate the way we design our clustered indexes?  Read more...
By Tony Davis 2012/10/01 | Source: | Category: editorial
Rating: |  Discuss |   Briefcase | 310 reads

Targeted Index Performance Improvements

This article identifies which indexes are used when T-SQL code runs, and proposes ways of improving these targeted indexes, leading to better performing code.  Read more...
By Ian Stirk 2012/08/03 (first published: 2009/09/17) | Source: | Category: performance tuning
Rating: |  Discuss |   Briefcase | 42,045 reads

Introduction to Indexes: Part 3 – The nonclustered index

Part 3 of a great series on the basics of indexes. Learn the structure, definition, and how to examine the use of these indexes in your queries.  Read more...
By Gail Shaw 2012/07/23 (first published: 2009/11/18) | Source: | Category: indexing
Rating: |  Discuss |   Briefcase | 48,252 reads
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