Long time, no posts
I was working on two publisher contracts at the same time. I highly recommend never doing that. One is done, though, and it’s officially published as of September 2022....
2022-10-27
10 reads
I was working on two publisher contracts at the same time. I highly recommend never doing that. One is done, though, and it’s officially published as of September 2022....
2022-10-27
10 reads
I believe that language matters, and that it is worth our effort to move away from language associated with slavery and racism whenever possible. Azure DevOps doesn’t technically allow...
2020-06-26
357 reads
I used to make fun of YAML because I was scared of it. I still make fun of YAML, but I’m not scared of it anymore now that Rob...
2020-06-25
73 reads
Thanks to the support of Redgate, I’ve launched a new course which teaches you the basics of TSQL. The course is totally free, no logins required — we don’t...
2020-05-11
62 reads
I have an idea! Let’s have a “Worst Code Contest.” Why do this? Bad code is really fun — at least, when you write it on purpose. And other...
2020-04-24
20 reads
People have been writing about how evil scalar functions are in SQL Server for ten years. But people still use scalar functions in their code all the time. And...
2020-03-24
16 reads
We’ve got a session coming up in the free Redgate Streamed virtual conference on, “How database DevOps levels up remote work.” When thinking about that session I began thinking...
2020-03-23
7 reads
I’m giving a session on index tuning at the upcoming Redgate Streamed free online conference. The conference will be held April 1-3 2020, register here and join us! I...
2020-03-20
19 reads
We’re thrilled to announce Redgate Streamed: a 3 day online virtual community conference, to be held April 1-3, 2020. Register at Redgate.com/RedgateStreamed In this 9 minute livestream, I give...
2020-03-19
4 reads
I’m introducing a series of “learner’s guides” — overviews of a given topic, chock full of links and references. For this first post, the information is based on what...
2020-03-19
44 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