Left outer join vs NOT EXISTS
And to wrap up the miniseries on IN, EXISTS and JOIN, a look at NOT EXISTS and LEFT OUTER JOIN...
2010-03-25
5,209 reads
Blogs
A little restriction that prevent changing tables in SQL Server 2008
In SQL Server 2008, by default, the option to prevent tables changes is "on". We can have some issues and...
2010-03-24
4,013 reads
Minimizing Fragmentation when Moving data using a Switch
Yesterday was the first day of the SQL Server 2008 R2 airlift.I attended a great session on Implementing a Fast...
2010-03-23
972 reads
Microsoft SQL Server identify I/O bottlenecks
You can also identify I/O bottlenecks by examining the latch waits. These latch waits account for the physical I/O waits...
2010-03-19
2,337 reads
Thoughts on SQL Server Certification
This is probably part 1 of a series, but no guarantees.
Why Certify?
I've been working with SQL Server for 10 years...
2010-03-19
1,842 reads
Scripting database objects in SQL Server 2008
In this article, we would go through the
steps to script the objects in a database using SQL Server 2008....
2010-03-18
2,663 reads
Finding Date Ranges for Calculating Statistics
Finding Date Ranges for Calculating StatisticsI received the following question from a fellow DBA:
I need your input to derive the...
2010-03-17
1,763 reads
Solving All Versus (Select All) SSRS End User Confusion
When developing reports that use Analysis Services as a data source end user can sometimes be confused about some of...
2010-03-16
2,847 reads
Breaking Down TempDB Contention
Breaking Down TempDB Contention
What is tempDB contention? From the outside looking in, tempDB contention may look like any other blocking. There...
2010-03-10
2,763 reads
SSRS – KPIs without Analysis Services
During a recent project I was asked if it was possible to simulate Key Performance Indicator (KPI) images in SQL...
2010-03-09
1,684 reads
Blogs
From Couch-Potato to Triathlete – and What This Means for Your SQL Server
Do you know if your SQL Server is really running at its best? To...
Retro Data 2025 – Slidedeck
You can find the slides of my session on the €100 DWH in Azure...
The Book of Redgate: We Value Teams
By Steve Jones
This value is something that I still hear today: our best work is done...
Forums
Is there a way for SP to know who called it?
Hi everyone I am writing an SP where there is logic inside the SP...
Planning for tomorrow, today - database migrations
Comments posted to this topic are about the item Planning for tomorrow, today -...
Bottlenecks on SQL Server performance
We have a BI-application that connects to input tables on a SQL Server 2022...
Question of the Day
The Tightly Linked View
I try to run this code on SQL Server 2022. All the objects exist in the database.
CREATE OR ALTER VIEW OrderShipping
AS
SELECT cl.CityNameID,
cl.CityName,
o.OrderID,
o.Customer,
o.OrderDate,
o.CustomerID,
o.cityId
FROM dbo.CityList AS cl
INNER JOIN dbo.[Order] AS o ON o.cityId = cl.CityNameID
GO
CREATE OR ALTER FUNCTION GetShipCityForOrder
(
@OrderID INT
)
RETURNS VARCHAR(50)
WITH SCHEMABINDING
AS
BEGIN
DECLARE @city VARCHAR(50);
SELECT @city = os.CityName
FROM dbo.OrderShipping AS os
WHERE os.OrderID = @OrderID;
RETURN @city;
END;
go
What is the result? See possible answers