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SQL 2008 R2

Really short post here.  I just found out that Stacia Misner (blog |blog 2 | @StaciaMisner) and Ross Mistry have released...

2010-04-21

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Part 3 of 3: Tuning DiskANN — R, Alpha, L, Beam Width, Recall and Latency

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In Part 1, we saw how ‘Vamana’ represents vectors as nodes, connects them with...

Automated SQL Server Benchmarking with HammerDB and Docker: A Complete Testing Framework

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I’m excited to announce the release of a new open-source project that fully automates...

T-SQL Snapshot Backups on Availability Group Secondary Replicas

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One of my favourite features of SQL Server 2022 was the T-SQL Snapshot Backups....

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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