Month-over-Month calculation using DAX in Power BI
Introduction Period-over-period is an analysis technique in business that measures some value in the present and compares it to the same measurement in a comparable period of time in the past. The goal is to adjust the slice of the past you are viewing, so the same amount of time has passed in the two […]
Basic Concepts of Probability Explained with Examples in SQL Server and R
Many organizations have known the fact that data have been evolved from the by-product of corporate applications into a strategic asset [1]. Like other corporate assets, the asset requires specialized skills to maintain and analyze. With modern data analytic tools, for example Python, R, SAS and SPSS, IT professionals can build models and uncover previous unknown knowledge from the ocean of data.
But the Database Worked in Development! Preventing Broken Constraints
Database table constraints such as foreign keys and default values ensure reliability of the data. In this article, Phil Factor demonstrates a way to find any data that breaks the build so it can be corrected before deployment.
Towards an efficient interface between application and database
As JSON documents becomes increasingly widely used, as the interface between application and database, Phil Factor reckons it's about time JSON Schema was built-in to SQL Server, alongside XML Schema.
Should I Type * or 1 With the EXISTS Logical Operator
In my project I see that people writes different things with EXISTS logical operator (EXISTS (SELECT StarOrOne FROM...)). They are "*", "1" and even "TOP 1 1" or "TOP 1 *". The aim of this article to give a good explanation which option is the best.
Monitoring SQL Server with Splunk and SQL Monitor
Splunk is a search engine for collecting and analyzing all sorts of "machine data", including log data and metrics for SQL Server. SQL Monitor gives you the detailed diagnostic view of all your SQL Server instances, and databases. If you have Splunk to monitor your applications and server infrastructure, and SQL Monitor to help you understand the behavior of a complex database system such as SQL Server, then you have a powerful and capable monitoring tool set.
Prevent SQL Server Blocking using Lock_Timeout
In this tip we look at a way to minimize the length of blocking using SQL Server lock timeout.
Stable Marriages Using SQL Server
In this article, we see how SQL can be used to determine matches between two groups, given a set of preferences.
Blogs
Keeping Redshift System Table History Past 7 Days with S3 Tables
Redshift keeps its SYS_* monitoring views for seven days in cluster, which is fine...
Updating the Data API Builder
By Steve Jones
I was updating my session for the Data API Builder (DAB) recently, mostly to...
T-SQL Tuesday #202 Invitation: That One SQL Server Outage You’ll Never Forget
I am excited to host T-SQL Tuesday for the first time. I want to...
Forums
advice on ssrs version control
Hi we're a bit behind on versioning ssrs. I think we have over 1600...
Practical Ways to Approach SQL Server Problems and Case Studies
Working with SQL Server can involve more than just writing queries. Understanding database design,...
Measuring Productivity
Comments posted to this topic are about the item Measuring Productivity
Question of the Day
Tracking All the Queries
I have 3 instances of a brand new long running query that are executing on a SQL Server 2025 instance. Query store is enabled. One of the queries is killed by the administrator, one is cancelled by the user. The other runs to completion. How many rows are in Query Store for this query?
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