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SQL Server 2016: Clustered Columnstore Index Enhancements

by Jonathan Allen on  Jun 04, 2015

Clustered Columnstore Indexes were one of the two headline features for SQL Server 2014. Designed for tables with over 10 million rows, they allow for good performance on analytical queries without the need to explicitly specify indexes. With SQL Server 2016, they gain the ability to support secondary indexes.

SQL Server 2016: Updatable, Non-Clustered Columnstore Indexes

by Jonathan Allen on  Jun 03, 2015 1

Non-clustered Columnstore Indexes are also getting some enhancements in SQL Server 2016. The most notable of these enhancements is the ability to be updated.

SQL Server 2016: In-Memory Columnstore Indexes

by Jonathan Allen on  Jun 02, 2015

New for SQL Server 2016 is the ability to place a Columnstore Index on an In-Memory Table.

SQL Server 2016: JSON Support

by Jonathan Allen on  May 28, 2015 1

SQL Server 2016 will finally see native support for JSON.

SQL Server Roundup

by Jonathan Allen on  Jan 05, 2015

A lot of small releases were made by Microsoft’s SQL Server team last month. Some of the highlights include Power BI for on-site servers, System Center support for SQL Server 2014, and updated Java/PHP drivers.

August Patch Tuesday Improves Internet Explorer's Security and Features

by João Paulo Marques on  Aug 27, 2014

In their latest Patch Tuesday, Microsoft issued 9 bulletins covering a total of 37 common vulnerabilities and exposures (CVE) spread across some of their products.

Potential for Data Loss in SQL Server 2012 SP 2

by Jonathan Allen on  Jun 12, 2014 1

The second service pack for SQL Server 2012 was recently released with over 30 bug fixes since the last cumulative update. But according to Aaron Bertrand of SQL Sentry, one important hotfix for Enterprise customers didn’t make the cut.

Data Warehousing in SQL Server 2014 RTM

by Jonathan Allen on  Mar 18, 2014

SQL Server has been released to manufacturing with general availability set for April 1st. Through this week we’ll be covering various aspects of the new release starting with data warehousing.

More on Indexes in In-Memory OLTP

by Jonathan Allen on  Feb 03, 2014

Indexes in SQL Server’s In-Memory OLTP don’t work exactly like normal indexes. This isn’t necessarily a bad thing, but the differences need to be kept in mind to avoid performance problems.

A First Look at Opserver, Stack Exchange's Monitoring Solution

by João Miranda on  Dec 09, 2013

Opserver is an open source monitoring solution, released by StackExchange, of StackOverflow's fame. Opserver provides a quick overall view of each monitored system's health, while allowing the user to deep dive using a drill-down approach. InfoQ talked with Nick Crave, one of Opserver’s creators, for additional insight.

Migration Analyzer for SQL Server’s In-Memory OLTP

by Jonathan Allen on  Sep 30, 2013

One of the biggest challenges when researching a new technology is determining where to start. A typical SQL Server installation could easily have hundreds of tables. Examining each one by hand to determine which would benefit from conversion, is a daunting challenge. This is where the AMR Tool comes into play.

Transactions and SQL Server 2014’s In-Memory OLTP

by Jonathan Allen on  Sep 27, 2013

In this report we look at the internals of SQL Server’s In-Memory OLTP to see how it uses timestamp-like transaction ids in lieu of locks.

Introducing SQL Server 2014's New Clustered Columnstore Indexes

by Jonathan Allen on  Sep 26, 2013

SQL Server 2014 will offer Clustered Columnstore Indexes. These will offer the performance and compression benefits of column-oriented storage without the need to restrict the underlying table to read-only access.

Natively Compiled Tables in SQL Server 2014

by Jonathan Allen on  Sep 25, 2013

Originally this report was titled “Natively Compiled Queries”, but that doesn’t do justice to how deep this runs. When a memory optimized table is created, SQL Server will create a DLL specifically for that table. All data access for the table, including indexes, occurs through this DLL.

Indexes in SQL Server 2014's Memory Optimized Tables

by Jonathan Allen on  Sep 24, 2013

SQL Server 2014’s Memory Optimized Tables handle indexes very differently than traditional tables. First and foremost, you must have at least one index and cannot have more than eight indexes. Only the primary key can be marked as unique and don’t even think about foreign keys or filtered indexes.

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