books

Technical Article

Free eBook: SQL Server Execution Plans

  • Article

Every Database Administrator, developer, report writer, and anyone else who writes T-SQL to access SQL Server data, must understand how to read and interpret execution plans. This book leads you right from the basics of capturing plans, through how to interrupt them in their various forms, graphical or XML, and then how to use the information you find there to diagnose the most common causes of poor query performance, and so optimize your SQL queries, and improve your indexing strategy.

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2013-01-17

7,238 reads

Technical Article

Free eBook: Inside the SQL Server Query Optimizer

  • Article

This free eBook from Redgate Software will take you from the fundamentals of Statistics, Cost Estimation, Index Selection, and the Execution Engine, and guide you through the inner workings of the Query Optimization process, and throws in a pragmatic look at Parameterization and Hints along the way.

5 (1)

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2020-12-09 (first published: )

54,472 reads

SQLServerCentral Article

The Art of SQL Server FILESTREAM by Jacob Sebastian and Sven Aelterman

  • Article

FILESTREAM is implemented as an extension to the VARBINARY(MAX) data type and allows large object data to be stored in a special folder on the NTFS file system, while bringing that data under the transactional control of SQL Server. This book describes both the way it works and the implementation, administration and troubleshooting of it.

4 (1)

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2012-11-12

576 reads

Technical Article

Free ebook: Troubleshooting SQL Server: A Guide for the Accidental DBA

  • Article

Merry Christmas from SQLServerCentral. We spend much of our working life helping solve SQL Server-related performance problems, hands-on, during consulting, or on online forums. We've seen a few weird-and-wonderful issues but, mainly, it’s the same problems and misconceptions time-and-again. This is our attempt to describe, diagnose, and solve the most common problems with SQL Server 2005, 2008, and 2008 R2. And it's free.

5 (3)

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2012-12-25 (first published: )

18,171 reads

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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