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SQLServerCentral Article

dbatools - new functions for Database Mail

  • Article

Background The dbatools module is broadly used and is an ever-growing set of useful commands. While looking for some inspiration I checked the old issues logged on the GitHub repository. Finally, I found this one Remove-DbaDbMail Profile and Account · Issue #4990 · sqlcollaborative/dbatools (github.com). The issue was more than 2.5 years old (32 months). […]

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2021-11-01

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SQLServerCentral Article

Implement Azure SQL Elastic Jobs with PowerShell

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In this article, I will work you through the process of creating elastic jobs in Azure using PowerShell. The elastic jobs are similar to regular agents jobs in SQL Server although they add extra functionality like for example dedicated target groups that can be used in the job step level. Currently, the elastic jobs are […]

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2021-06-21 (first published: )

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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