Will Assaf


Blog Post

Moving Into Consulting 101

Introduction to this blog series

After being laid off by a Great Recession-era mortgage company in 2007, I entered into consulting. I made that switch from in-house DBA to consulting...

2021-03-30 (first published: )

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Blog Post

Confounding Variables from Historical Bias

Note: co-authored with Christine Assaf, originally published in the now-defunct PASS Blog.
Historical data analysis that is naïve to past discrimination is doomed to parrot bias. How do we combat bias in our...

2020-09-23

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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