Blog Post

Why You (usually) Want a Clustered Index

Note: I originally wrote this a few years ago but never posted it. It resurfaced when I migrated the blog so it’s being posted now.
After watching Kevin Kline’s (blog...

2022-06-13 (first published: )

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Blog Post

Snowflake + Azure Privatelink

Azure Privatelink provides private connectivity from an Azure Virtual Network to Azure PaaS such as Snowflake. This secures the connection between client endpoint and Snowflake(more...)
The post Snowflake + Azure...

2022-05-13

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Question of the Day

ORDER BY alias

There is a table tmp_tab:

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression:
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers