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SQLServerCentral Editorial

Pushing the Limits of AGs

  • Editorial

Many of you reading this likely have an Availability Group (AG) set up on at least one database in your organization. Maybe not most, but many of you as this has proven to be a technology that many people like for HA/DR, upgrades, and probably other uses. As the technology has evolved from it's SQL […]

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2025-09-17

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SQLServerCentral Editorial

The Yutes

  • Editorial

I recently had the opportunity to talk a little PostgreSQL with the Salt Lake City PostgreSQL Meetup group (thank you for having me by the way). Great bunch of people who were really engaged and asked a lot of questions. On the way out of the event, I was chatting with one person (who had […]

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2025-09-13

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SQLServerCentral Article

How to create your custom GPT SQL Expert

  • Article

Introduction ChatGPT includes custom GPTs. You can create your own custom GPT. In this article, we will demonstrate how to create a custom GPT expert in SQL Server. Requirements To create your own GPT, you need to use the paid version of ChatGPT. First, go to ChatGPT. Secondly, if you don’t have the paid version, […]

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2025-08-15 (first published: )

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SQLServerCentral Article

MongoDB and NodeJS in action

  • Article

Overview MongoDB is a popular NoSQL database used for building modern, scalable applications. In this article, we’ll cover how to set up MongoDB on Windows and connect to it using Node.js. We will also perform some basic Create, Read, Update, and Delete (CRUD) operations to ensure we understand fully on how Node.js can be made […]

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2025-09-02 (first published: )

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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