Article Overview In this article we will learn how to integrate a Spring boot application with Apache Cassandra database and Redis cache. This is an extension to one of our previous articles which demonstrates the steps to set up Apache Cassandra and how to integrate is with Springboot, link shared below. https://www.sqlservercentral.com/articles/cassandra-springboot-integration In this tutorial […]
2025-07-14 (first published: 2024-07-18)
63 reads
Overview In this article we will go through the various in built aggregate functions available in PostgreSQL. Aggregate functions perform a calculation on a set of rows and return a single value. COUNT Function The COUNT function is a simple and very useful function in counting the number of records, which are expected to be […]
2025-07-09
435 reads
2024-12-06
1,512 reads
This article shows how to get started with the PostgreSQL API in Azure Cosmos DB.
2024-07-29
1,218 reads
Another article on how the SQL language works in PostgreSQL. This time we examine the UNION, INTERSECT, and EXCEPT operators.
2024-05-31
1,490 reads
Learn the basics of how to work with objects in Cassandra, a NoSQL database.
2023-12-01
1,329 reads
2023-08-25
577 reads
In this article you will learn how to use the COPY command in PostgreSQL to copy a database or a table.
2023-06-09
4,994 reads
This article will cover exporting data from a PostgreSQL table to a CSV file, both from the command line and pgAdmin. We will also look at importing data from a CSV file.
2023-05-05
1,959 reads
2023-03-17
4,881 reads
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
Quite the title, so let me set the stage first. You have an Azure...
Comments posted to this topic are about the item Rollback vs. Roll Forward
Comments posted to this topic are about the item Foreign Keys - Foes or...
Comments posted to this topic are about the item 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