Some people will assure you that you can't do any serious statistical calculations in SQL. In the first of a series of articles, Phil factor aims to prove them wrong by explaining how easy it is to calculate Pearson's Product Moment Correlation.
2017-06-09
4,713 reads
Partitioning data is a standard SQL Server administration practice. Partitions enable independent administration of different slices of data. When a SQL Server Analysis Services (SSAS) tabular data model is developed and processed, data is read from the source system and loaded into the tabular data model configured in In-Memory processing mode. Every time the model is processed, the entire data set may not require re-processing. Only certain slices of data containing changes may require re-processing which can be achieved by partitioning data into logical slices. In this post, Siddharth Mehta looks at how to partition tables in Tabular SSAS.
2017-06-08
2,832 reads
When you are doing the rapid deployment of an updated SSIS project, there are a number of things you have to check to make sure that the deployment will be successful. These will include such settings as the values in environment variables, Package parameters and project parameters. The DbFit test framework turns out to be ideal for the purpose of doing final checks as part of a deployment process, as Nat Sundar demonstrates.
2017-06-07
3,586 reads
Prefer tabs but your teammates use spaces? That's not a problem with the brand new formatting options in SQL Prompt. It's now possible to customize, save, and share multiple styles that you can then quickly switch between when working. Here's how it works, and how to get set up.
2017-06-06
4,008 reads
Paul White describes temporary object caching in SQL Server – what it is, why it exists, and how to use it to your advantage.
2017-06-06
3,591 reads
If you are running Windows 8 and above, you might have found out that you can’t find SQL Server Configuration Manager in the list of installed applications. Read on to learn how to locate it.
2017-06-05
4,227 reads
Free download to all Simple Talk users. XML has been part of the SQL Standard since 2003, and is essential for any DBA because so many of the dynamic management views return XML data. Now that the industry is more used to data defined by document markup, it is becoming more important than ever for Database Developers and DBAs to understand the technology and to know where it makes sense to use XML.
2017-06-02
6,152 reads
Although the techniques of Database Lifecycle Management can reduce the timescales for the delivery of new functionality to business systems, what if the database 'layer' consists of several large interdependent databases and data flows with replication and audit? Does DLM scale to this level of complexity? Margaret Cruise O'Brien starts a series of articles that describes the practicalities of improving DLM within an existing framework and team supporting a multi-database multi-server system, by describing some of the database management problems and solutions in an enterprise-scale database.
2017-06-02
2,744 reads
Derik Hammer sets out to disprove another pervasive performance myth : TRUNCATE is faster than DELETE because it isn't logged and can't be rolled back.
2017-06-01
4,663 reads
How do you quantify the value of DevOps? The answer might depend on what value actually means for your organization, which stakeholder you’re talking to, and what type of...
2017-06-01
2,805 reads
By Tim Radney
Over the past few weeks, I’ve been contacted by multiple customers experiencing the same...
By Vinay Thakur
These days everything is changing to AI World, IT roles are getting changed and...
I’m doing a small series on indexing basics for SQL Server, and on May...
We suffered a SPAM attack from May 1-6, which unfortunately corresponded with time off...
Hi to all We have situation at a client where someone is illegally changing...
Hi to all We have situation at a client where someone is illegally changing...
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT TOP 2
json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
See possible answers