Articles

External Article

Using the DAX Calculate and Values Functions

In the first two articles in this series on creating DAX formulae, Andy Brown of Wise Owl Training showed how to create calculated columns and measures. In this third article, he turns his attention to two of the most important DAX functions (CALCULATE and VALUES), showing how and when to use them. If DAX knowledge can be compared to a heavily fortified castle, the CALCULATE function is the drawbridge giving access to it.

2019-02-18

2,279 reads

External Article

Empty Thoughts: Working with NULL

Whether or not to have NULLable columns in a table can be a religious debate, and how missing data is represented should be carefully considered during database design. In this article, Joe Celko considers the ways that SQL Server handles NULLs in several situations.

2019-02-11

3,289 reads

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Adding and Dropping Columns II

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Question of the Day

Adding and Dropping Columns II

I have this table in my SQL Server 2022 database:

CREATE TABLE [dbo].[CityList]
(
[CityNameID] [int] NOT NULL IDENTITY(1, 1),
[CityName] [varchar] (30) ,
[Country2] [char] (3),
[stateprovince2] [char] (2),
[Country] [char] (3),
[stateprovince] [char]
) ON [PRIMARY]
GO
I decide to drop the stateprovince2 and country2 columns. What code should I use?

See possible answers