Prakash K

I am a MS SQL DBA, born and brought up in Mumbai, India. Done my engineering in Electronics And Telecommunications and have been working in this industry as a DBA since 2011

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SQLServerCentral Article

Improving SQL Server Performance and Availability with Accelerated Database Recovery

For many businesses, database performance and availability are crucial elements. A database crash or a lengthy transaction can cause a lot of downtime and have a negative effect on business operations. However, with the introduction of Accelerated Database Recovery (ADR), Microsoft SQL Server has added a potent new feature that greatly enhances database availability and […]

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2023-05-02 (first published: )

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Blog Post

Intelligent Query Processing (IQP)

In SQL Server 2022, a new feature called Intelligent Query Processing (IQP) makes use of machine learning to enhance query performance. Because of the automatic workload adjustment provided by...

2023-03-20 (first published: )

669 reads

Blog Post

In Memory OLTP – 1

In-Memory OLTP  (A.K.A. Hekaton) is a specialized, memory-optimized relational data management engine and native stored procedure compiler, integrated into SQL...

2016-12-06

633 reads

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Question of the Day

Fun with JSON I

I have some data in a table: 

CREATE TABLE #test_data
(
    id INT PRIMARY KEY,
    name VARCHAR(100),
    birth_date DATE
);

-- Step 2: Insert rows  
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned? 
SELECT *
FROM OPENJSON(
     (
         SELECT t.* FROM #test_data AS t FOR JSON PATH
     )
             ) t;

See possible answers