SQLServerCentral Editorial

The Growth of T-SQL

I saw this tweet recently, where Richie Rump asked what has changed in T-SQL since the SQL Server 2012 version. A few people from Microsoft responded that there were changes in all versions, and while I think some versions have few changes, I decided to look. SQL Server 2012 introduced the window functions with the […]

SQLServerCentral Editorial

Constant Learning

Yesterday, I had the opportunity, and the privilege, to attend an all-day workshop put on by Bob Ward teaching all about SQL Server 2022 (you can take this too, Bob is presenting it at SQLSaturday Austin and SQL Bits, and there will be more). It was a great day. Bob is an excellent teacher. Even […]

SQLServerCentral Article

A Version Control Strategy for Branch-based Database Development

The migration to a different VCS should not be underestimated, as there is a lot more involved than just switching tools, and that’s what Tonie Huizer covers in this article.
First, the team needed to migrate the monolithic repos over to Git, second the team needed to make sure we had a branching strategy and workflow in place.
It involved a big process change for the team as well, but this switch is mandatory to make full use of branch-based database development.

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What's New for the Microsoft Data Platform

By Steve Jones - SSC Editor

Comments posted to this topic are about the item What's New for the Microsoft...

Using Outer Joins

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Using Outer Joins

Closest to ProcDate

By boehnc

Not sure I have this 2nd left join correct. I need to grab the...

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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