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Articles with tag Performance Rss

Search for any content tagged performance

   Items 1 to 20 of 39    Older >>
 

Finding and Eliminating Duplicate or Overlapping Indexes

Duplicate & Overlapping Indexes can be a drag on write speed and disk resources. How do we find and eliminate them quickly and effectively?  Read more...
By Edward Pollack 2016/07/08 (first published: 2014/06/16) | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 10,412 reads

A Comparison of JDBC Drivers for MySQL

A brief comparison of three different JDBC Drivers built for connecting with MySQL  Read more...
By Jerod Johnson 2016/05/19 | Source: SQLServerCentral.com | Category: jdbc
Rating: |  Discuss |   Briefcase | 781 reads

Join Operations – Hash Match

The way in which SQL Server chooses to join your tables in a query can dramatically affect performance. In this article, Jason Brimhall explains how a hash match works and shows some performance numbers.  Read more...
By Jason Brimhall 2016/05/13 (first published: 2014/03/04) | Source: SQLServerCentral.com | Category: execution plans
Rating: |  Discuss |   Briefcase | 12,498 reads

Performance Surprises and Assumptions : DATEADD()

Aaron Bertrand explores yet another scenario where a date/time function seems to cause the optimizer to behave unexpectedly.  Read more...
By Additional Articles 2016/05/12 | Source: SQLPerformance.com | Category: dateadd
Rating: (not yet rated)  Rate this |   Briefcase | 4,263 reads

GUI Enhancement on Instant File Initialization (IFI) in SQL Server 201

Ability to enable Instant File Initialization during the installation of SQL Server 2016.  Read more...
Rating: |  Discuss |   Briefcase | 1,121 reads

Reaping the benefits of the Window functions in T-SQL

Exploring the potential benefits of the T-SQL Window functions (OVER, LAG, and LEAD) in this piece. You can learn how to achieve up to 50% performance boost by replacing a single function call.   Read more...
By Eirikur Eiriksson 2016/04/22 (first published: 2014/03/24) | Source: SQLServerCentral.com | Category: sql server 2012
Rating: |  Discuss |   Briefcase | 13,033 reads

Performance Surprises and Assumptions: STRING_SPLIT

SQL Server 2016 RC0 introduces a new native string splitting function, STRING_SPLIT. In this article, Aaron Bertrand compares its performance to existing methods.  Read more...
By Additional Articles 2016/04/06 | Source: SQLPerformance.com | Category: string_split
Rating:  Rate this |   Briefcase | 3,674 reads

Sparse Columns in SQL Server : Impact on Time & Space

Erin Stellato (@erinstellato) looks into sparse columns in SQL Server – the changes to space requirements and the impact on the write portion of your workload.  Read more...
By Additional Articles 2016/03/15 | Source: SQLPerformance.com | Category: performance
Rating: (not yet rated)  Rate this |   Briefcase | 3,247 reads

Foreign Key Indexes and Binding

Understand what FK's do and how they use indexes. Then use my script to see if they're using good indexes.  Read more...
By Steve Hood 2016/02/10 | Source: SQLServerCentral.com | Category: foreign keys (fk)
Rating: |  Discuss |   Briefcase | 3,237 reads

Combining R and SQL Server to diagnose performance bottlenecks

Using clustering algorithms to analyse index usage data from SQL Server’s DMVs & simplify complex performance investigations.  Read more...
By Nick Burns 2015/12/07 | Source: SQLServerCentral.com | Category: performance
Rating: |  Discuss |   Briefcase | 7,865 reads

Data Mining Part 33: The Performance counters

In this new article, we will explain how to use the Performance Counter to measure performance and activity in Microsoft Data Mining  Read more...
By Daniel Calbimonte 2015/11/26 | Source: SQLServerCentral.com | Category: performance
Rating: |  Discuss |   Briefcase | 1,423 reads

Introducing the Set-based Loop

Set-based programming doesn’t mean “no loops” or a single statement. Finding out the best ways to traverse a full hierarchy.  Read more...
By Luis Cazares 2015/07/27 | Source: SQLServerCentral.com | Category: set-based loop
Rating: |  Discuss |   Briefcase | 13,765 reads

Analyzing I/O Performance for SQL Server

Inadequate storage is one of the most common bottlenecks seen in subsystem performance. There are a number of reasons for poor storage performance, but measuring it and understanding what needs to be measured and monitored is always a useful exercise.   Read more...
By Additional Articles 2015/07/21 | Source: SQLPerformance.com | Category: performance
Rating: (not yet rated)  Rate this |   Briefcase | 4,809 reads

Testing SQL Server Backup Performance with Trace Flag 3042

Starting with SQL Server 2008 a new feature which allowed us to create compressed backup files by pre-allocating space. This tip will look at the performance impacts of disabling pre-allocation of space using the 3042 SQL Server trace flag.  Read more...
By Additional Articles 2015/05/19 | Source: MSSQLTips.com | Category: trace flag
Rating: (not yet rated)  Rate this |   Briefcase | 6,230 reads

Identifying Start Dates not Aligned with End Dates on a Prior Row

When effective end dates don't align properly with effective start dates for subsequent rows, what are you to do?  Read more...
By Dwain Camps 2015/03/24 | Source: SQLServerCentral.com | Category: t-sql
Rating: |  Discuss |   Briefcase | 6,232 reads

Understanding Graphical Execution Plans - Part 1: Explaining the Plan

Understanding execution plans is a good basic skill for all DBA's and SQL developers. Darren White gives us an overview of what execution plans are in SQL Server and how they are used.  Read more...
By Darren White 2015/02/13 (first published: 2014/02/18) | Source: SQLServerCentral.com | Category: execution plans
Rating: |  Discuss |   Briefcase | 26,430 reads

Performance of the SQL MERGE vs. INSERT/UPDATE

The SQL MERGE statement offers convenience, safety and elegance, but how does it perform compared to other methods?  Read more...
By Dwain Camps 2015/02/06 (first published: 2013/10/28) | Source: SQLServerCentral.com | Category: merge
Rating: |  Discuss |   Briefcase | 33,771 reads

Grant Fritchey Reviews Minion Reindex

Grant Fritchey reviews Midnight DBA's Minion Reindex, a highly customizable set of scripts that take on the task of rebuilding and reorganizing your indexes.   Read more...
By Grant Fritchey 2015/01/27 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 1,801 reads

SQL Server 2014 Checklist for Performance

A checklist to help optimize the performance of SQL Server   Read more...
By Rudy Panigas 2014/12/29 | Source: SQLServerCentral.com | Category: performance
Rating: |  Discuss |   Briefcase | 7,835 reads

The Ins and outs of In-Memory OLTP

As you may know, SQL Server is a very robust database, but SQL server has its performance bottlenecks. With the introduction of In-Line memory OLTP, there is a chance to get rid of the performance bottlenecks   Read more...
By Roy Ernest 2014/09/16 | Source: SQLServerCentral.com | Category: microsoft sql server
Rating: |  Discuss |   Briefcase | 5,923 reads
   Items 1 to 20 of 39    Older >>