How to choose between SQL and NoSQL databases
Organizations have many choices when it comes to databases. In this article, Robert Sheldon explains how to choose between SQL and NoSQL databases.
Measuring Team Performance: Calculate LeadTime metric using JIRA and GitHub data
In this article we look at how to measure lead time for development projects using Python along with GitHub and JIRA.
A Step by Step Guide to the Availability Group (AG) Listener
Availability databases hosted on SQL Server Always On Availability Groups (AG) can be connected using a unique Virtual Network Name (VNN), called the Availability Group Listener. When an Availability Group is enabled, clients can connect to databases in both primary and secondary replicas without explicitly specifying the SQL Server instance name. You don’t even need […]
Step by Step Guide to Install Jupyter Notebook
Whether you work as a Data Engineer or a Data Scientist, a Jupyter Notebook is a helpful tool. One of the projects I was working required a comparison of two parquet files. This is mainly a schema comparison, not a data comparison. Though the two .parquet were created from two different sources, the outcome should […]
How to Manage Date Formats in the Power BI Service
Learn how to properly configure input date formats for Power BI reports for any type of browser so users always get the results they expect.
Win DevOps books with Redgate’s competition
Redgate is giving you the chance to win your choice of DevOps books and Redgate goodies in their latest competition. To enter, visit the Redgate Forums and answer the question: ‘How is SQL Change Automation helping you?’
What counts for a DBA: Foresight
Of all the valuable attributes of a DBA, from passion to humility to practicality, perhaps one of the most important attributes may turn out to be the most seemingly nebulous: foresight. According to Free Dictionary, foresight is the "perception of the significance and nature of events before they have occurred". Foresight does not come naturally to most people, as the […]
SQL Server Integrates Hadoop and Spark out-of-the box: The Why?
Why has Microsoft added new capabilities in SQL Server to connect to other types of data sources? Read on to learn more.
Blogs
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Cognitive Coverage
Comments posted to this topic are about the item Cognitive Coverage
Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers