Data Mining Part 19: Excel and Data Mining, Samples, Queries
This lesson explains how to Clean Data, Explore Data, get Samples of Data, Classify and query a Data Mining Model.
Triple Digits
Salaries for data professionals have risen quite a bit, according to the latest salary survey. That's good for those of us working with SQL Server.
Data Is Crazier than You Think
As a society, we have an unrealistic respect for data, especially if it has a decimal point somewhere and uses metric units. We who are in the business of data need to cultivate a renewed interest in the sceptical and rigorous science of statistics: it is too important to leave to 'Data Scientists'. If the data is wrong, or the way we analyse or report it is misleading, much of what we do is pointless.
SQL Monitor Custom Metric: Average I/O Stalls
This metric is a great general indicator of performance problems. High stall times indicate I/O problems, which can be attributed to busy physical disks or queries that return large data sets to the client.
Dynamically change background color in SSRS reports using custom code
This article demonstrates the use of custom code and cell expressions referencing that custom code to toggle the background color of groups of rows in an SSRS report based upon value-changes in one of the fields.
Managers: who needs them?
Managers, look away now. Patrick Index wants to get something off his chest...
Preparing Your Enterprise for Big Data
Big data applications are now fairly commonplace in large organizations. It is, however, difficult to simply ‘drop’ these applications into an existing IT infrastructure and expect to run smoothly. In addition to energy and cooling requirements for new hardware to support the new big data application, other IT areas need to prepare.
Memory Corruptions, or Why You Need DBCC CHECKDB
DBCC is a mechanism that can protect you against corruptions causing substantial data loss in your database. If you use it.
The MidnightDBAs release Minion Reindex
The MidnightDBAs have developed a free reindexing solution to help DBAs perform maintenance on their instances. Read about the solution and attend their webinar.
The Role of the Technical Architect in Development
What do Technical Architects (TAs) actually do when in a development role? Are they just senior developers 'pushed upstairs' into a management role? Is there a clear distinction between a TA and a product, or project, manager? In an increasingly automated and joined up development environment, the role is important, varied and wide-ranging; as Grzegorz Strzelecki explains.
Blogs
The Book of Redgate: Do the Right Things
By Steve Jones
I do believe that Redgate has been very customer focused since it’s inception. I’ve...
How to Connect to SQL Server When Nothing Else Works – DAC
By gbargsley
It's 2 AM. Your phone is going off. Users can't connect to the application,...
Get a Range of Sequence Values: #SQLNewBlogger
By Steve Jones
I discovered a procedure recently that I wasn’t aware of: sp_sequence_get_range. This post looks...
Forums
Warning: Could not open global shared memory to communicate with performance DLL
Hi everyone I am getting below warning when I run SSIS: Warning: 0x80049304 at...
Let's Talk Community Events!
Comments posted to this topic are about the item Let's Talk Community Events!
that one limitation in replication
Hi as shown below a replication target requires a primary key. if we want...
Question of the Day
Detecting Deadlocks
By default, how often is the SQL Server Database Engine checking for deadlocks?
See possible answers