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How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory

When a SQL Server Express-based factory app started crawling, the culprit wasn’t hardware or network — it was a decades-old WHILE loop migrated from C/C++ to SQL. This real-world story breaks down how procedural habits, memory grants, and lack of window functions nearly derailed a production floor.

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2025-07-28

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SQLServerCentral Article

Connecting to PostgreSQL with Node.js

Overview In this article, we will understand how we can connect to PostgreSQL using Node.js application. We will start with setting up PostgreSQL in our local system and perform basic CRUD operations to interact with the PostgreSQL database. Prerequisites To start with this, we need the following conditions to be met: Windows machine (or any […]

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2025-07-24

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SQLServerCentral Article

Taming Resource Hogs: Using SQL Server Resource Governor to Restrict User Group Consumption

Taming Resource Hogs: Using SQL Server Resource Governor to Restrict User Group Consumption As a SQL Server professional, I've often encountered situations where a single, poorly written query or a resource-intensive application threatened to cripple the entire database server. Performance bottlenecks, unexpected slowdowns, and user complaints become the norm, making your life as a DBA […]

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2025-07-24

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SQLServerCentral Article

Database Architecture Considerations for Implementing Content Moderation Services

Fellow SQL Server professionals, I wanted to share some insights and start a discussion about the database design challenges we face when implementing Content Moderation Services in enterprise applications. As more organizations build user-generated content platforms, the backend data architecture becomes critical for efficient moderation workflows. Database Design Challenges for Content Moderation Services Performance at […]

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2025-07-23

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SQLServerCentral Article

We Gave Memory-Optimized Tables a Hash Lookup — Then Tried Pattern Matching Instead

Introduction It was the week before Black Friday — the biggest online ad rush of the year. Our US-based ad-tech platform was gearing up for an insane traffic spike. Hundreds of real-time campaigns were about to go live across multiple brands, each with thousands of user sessions flowing through our system. Every incoming user impression […]

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2025-07-22

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Implementing Type 4 Slowly Changing Dimensions in SQL Server

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The Disabled Index

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Server-Level Table sizes

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Question of the Day

The Disabled Index

I run this code on SQL Server 2022.

CREATE TABLE Drink
(
    drinkid INT NOT NULL
        CONSTRAINT DrinkPK PRIMARY KEY CLUSTERED,
    drinkname VARCHAR(20),
    rating NUMERIC(2, 1)
)
GO

INSERT INTO Drink
(
    drinkid,
    drinkname,
    rating
)
VALUES
(1, 'Margarita', 4.5),
(2, 'Mojito', 4.3),
(3, 'Old Fashioned', 4.7),
(4, 'Martini', 4.4),
(5, 'Cosmopolitan', 4.2)
GO
ALTER INDEX drinkpk ON dbo.drink DISABLE
GO
SELECT * FROM dbo.Drink
GO
What is the result?

See possible answers