DevOps

External Article

Catch-up on Redgate Summit

  • Article

Did you miss the excellent presentations from DevOps experts Pramod Sadalage, Kellyn Pot’Vin Gorman, Samir Behara, and Kendra Little? Good news – all Redgate Summit sessions are available on-demand now. Choose from ‘the future of database DevOps’ keynote, latest DevOps trends, Q&A discussion, and demos.

2021-03-05

External Article

The Future of Database DevOps

  • Article

Join Pramod Sadalage, Director at Thoughtworks, and a stellar line up of speakers for Redgate Summit: The Future of Database DevOps on February 17 & 18. You’ll discover the latest trends in DevOps, brand new insights from the 2021 State of Database DevOps report, an introduction and technical demos of Redgate’s solutions for Database DevOps, and more.

2021-02-15 (first published: )

Blogs

Day 2 at PASS Data Community Summit 2024

By

I missed blogging yesterday as I was on stage/backstage for quite a bit of...

PASS Summit 2024 – Wednesday

By

A common theme in the PASS Summits I've attended is community and that's definitely...

Taming Database Challenges: Insights from Redgate Keynote

By

I am excited to cover the Microsoft Keynote on Day 2: Redgate Keynote: Simplifying...

Read the latest Blogs

Forums

Deduplicating rows by choosing the row with the shortest string

By Mark Dalley

Hello T-SQL experts I have a table containing team codes and descriptions. Unfortunately, many...

query help

By Bruin

I need some help to optimize this query as it runs in many threads...

Unencrypted connections in Always on Availability Group

By Awais Afzal

Hi, In my Always On Availability environment, I am seeing two encrypt_option values as...

Visit the forum

Question of the Day

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          2024-04-07
I 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.CustomerName

See possible answers