Before the SQL Window functions were implemented, it was tricky to calculate rolling totals or moving averages efficiently in SQL Server. There are now a number of techniques, but which has the best performance? Dwain Camps gets out the metaphorical stopwatch.
2013-11-01
4,628 reads
Distributed applications are just that: distributed across one or more hardware platforms across the enterprise. The database administrator (DBA) has the unenviable task of monitoring these environments and configuring and tuning the database server to meet multiple needs. As multiple distributed applications now require access to a very large data store, what tuning options are available to help?
2013-10-31
3,024 reads
Too often, the batch systems that underlie a lot of database processing just grow without conscious design. When runs start to extend beyond their allotted time, and tuning no longer solves the problem, it is often discovered that batches are run in series, with draconian error handling. It is time to impose some rational design, and Nigel is a seasoned healer of batch processes.
2013-10-30
3,753 reads
I'm using SQL Server's built-in encryption to hide data in one of my SQL Server databases, but this is a reporting system and my end users need to be able to query the data without having to remember the specialized decryption functions. Is there a way to do this? Yes, there is, via the use of views.
2013-10-29
4,794 reads
SSIS is able to take sorted data from more than one OLE DB data source and merge them into one table which can then be sent to an OLE DB destination. This 'Merge Join' transformation works in a similar way to a SQL join by specifying a 'join key' relationship. this transformation can save a great deal of processing on the destination. Annette Allen, as usual, gives clear guidance on how to do it.
2013-10-28
4,491 reads
In order to take full advantage of the In-Memory OLTP options in SQL Server 2014, you should migrate standard stored procedures that references Memory-Optimized tables to natively compiled ones. In this tip we will see how to achieve this goal.
2013-10-25
3,317 reads
SQL Server Reporting Services (SSRS) has evolved over the years to incorporate many new data visualization capabilities. In this article, Scott Murray illustrates how DBAs can use these tools to produce reports that include Indicators, Embedded Charts, Sparklins, and Chart overlays.
2013-10-24
6,148 reads
When pushing a major release to a large production database, you want to know that you'll be able to rollback changes if the need arises. These are some simple steps which we can follow to ensure that we don't have to reconfigure log shipping all over again thereby saving time and ensuring systems are not affected when rolling back changes.
2013-10-23
3,892 reads
In this article, Marcin Policht looks at migrating existing SQL Server databases to Windows Azure, starting with identifying obstacles associated with such migrations.
2013-10-22
3,910 reads
This article is an extract from the book Tribal SQL. In this article, Mark S. Rasmussen offers a concise introduction to the physical storage internals behind SQL Server databases. He doesn't dive into every detail, but provides a simple, clear picture of how SQL Server stores data.
2013-10-21
3,767 reads
By Bert Wagner
Until recently, my family's 90,000+ photos have been hidden away in the depths of...
By Kamil
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I am using ssrs in visual studio 2022, I work on a report, there...
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