Introduction Developing predefined reports in addition to all the ad-hoc queries have been a part of my daily activities. Often I find my stakeholders asking me to prepare reports in which they want to know something that has never happened. It might sound strange, but yeah, that's what their point of concern is all about. […]
2021-11-26 (first published: 2019-11-04)
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2019-10-28
6,947 reads
Learn how you can create a SQL Server instance in the Google Cloud Platform.
2019-09-26
3,659 reads
Learn about the advantages and disadvantages of using INCLUDE columns in your index.
2021-04-30 (first published: 2019-09-17)
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There are multiple ways to interact with the Docker daemon, as command line client API or GUI based tools like Kitematic. Docker also provides a SDK for Go and Python, this SDK can be used to create and manage Docker containers the same way it works with the Docker engine API.
2019-09-16 (first published: 2019-09-10)
1,833 reads
With origins from the world of “Submarine ‘Dolphin’ Qualification” questions, an “Oolie” is a difficult question to answer, or the knowledge or fact needed to answer such a question, that may or may not pertain to one's duties but tests one's knowledge of a system or process to the limit. Introduction Contrary to what many […]
2019-08-08
6,168 reads
The the basics of SQL and T-SQL in this short course of videos that explain some of the concepts.
2019-07-16
26,445 reads
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 […]
2019-07-02
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There are multiple ways to interact with the Docke...
2019-06-13
4,272 reads
In this article you will learn how to create and use alias commands for Docker, to make Docker's command line experience easier and more productive.
2019-05-20
20,230 reads
How can you achieve good enough without compromising the process/product? In the world of...
By Patrick
One of my customers recently wanted to rename each of the SQL audit files...
The post The pros and cons of self-service BI: What every industry leader should...
Comments posted to this topic are about the item What's New for the Microsoft...
Comments posted to this topic are about the item Using Outer Joins
I have this data in a SQL Server 2019 database:
Customer table CustomerID CustomerName 1 Steve 2 Andy 3 Brian 4 Allen 5 Devin 6 Sally OrderHeader table OrderID CustomerID OrderDate 1 1 2024-02-01 2 1 2024-03-01 3 3 2024-04-01 4 4 2024-05-01 6 4 2024-05-01 7 3 2024-06-07 8 2 2024-04-07I want a list of all customers and their order counts for a period of time, including zero orders. If I run this query, how many rows are returned?
SELECT c.CustomerName, COUNT(oh.OrderID) FROM dbo.Customer AS c LEFT JOIN dbo.OrderHeader AS oh ON oh.CustomerID = c.CustomerID WHERE oh.Orderdate > '2024/04/01' GROUP BY c.CustomerNameSee possible answers