Articles

SQLServerCentral Article

Tokenizing a String Using PARSENAME

SQL Server string manipulation using T-SQL leaves lots to be desired. Many postings and complaints about T-SQL deal with strings, but there are ways to work with it. Author Eli Leiba brings us a way to split out portions of a string that contains tokens with a user defined function. Read on to see how this is accomplished and the code used to perform the splitting.

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2004-12-27

12,088 reads

External Article

Clustering for Indexes

There is nothing spectacular about using indexes per say. However, on many occasions I have come across a variety of SQL coders that never consider validating that the index they think they are using is efficient or even being used at all. We can all put indexes on the columns that we think will be required to satisfy individual queries, but how do we know if they will ever be used. You see, if the underlying table data is constructed, contains, or is ordered in a particular way, our indexes may never be used. One of the factors around the use of an index is its clustering factor and this is what this article is about.

2004-12-23

3,412 reads

SQLServerCentral Article

Evaluating Boolean expressions using T-SQL

Every once in awhile there is a unique T-SQL solution in SQL Server that solves a rare problem. Not many of us have had to deal with boolean evaluation in our jobs, but a few have. Author Eli Leiba has and brings us a new article that shows how to build a procedure that can take a boolean expression and evaluate it to true or false.

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2004-12-21

15,105 reads

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The Tightly Linked View

By Steve Jones - SSC Editor

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Build a Test Lab of SQL Server 2025 on Windows Server 2025 using Hyper-V Virtual Machines

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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