Articles

External Article

Getting to know your customers better – cohort analysis and RFM segmentation in R

It often pays to use a tool like R, in conjunction with a relational database, to quickly perform a range of analyses, and graphs, in order to ensure that you're answering the right question, to explore alternative hypotheses, or to provide insight into a problem. Feodor demonstrates how to quickly, and interactively, explore the ways that customers purchase goods and services using cohort analysis.

2015-07-06

2,364 reads

External Article

Survey: Development and Test Databases

Unless development happens directly on the production database, every organization will manage one or more development and test instances. Redgate is doing research to learn how development and test databases are managed within organizations. If you’d like to know more about our plans, or are happy to help us understand the problem, please take part in this 3-page survey.

2015-07-01 (first published: )

4,682 reads

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The Tightly Linked View

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The Tightly Linked View

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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