2026-04-17
1,380 reads
2026-04-17
1,380 reads
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)
66 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
460 reads
2024-12-06
1,525 reads
This article shows how to get started with the PostgreSQL API in Azure Cosmos DB.
2024-07-29
1,249 reads
Another article on how the SQL language works in PostgreSQL. This time we examine the UNION, INTERSECT, and EXCEPT operators.
2024-05-31
1,501 reads
Learn the basics of how to work with objects in Cassandra, a NoSQL database.
2023-12-01
1,343 reads
2023-08-25
593 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
5,063 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
2,065 reads
Good documentation gets you started. Good books get you deep. After years of working...
By Vinay Thakur
In previous posts, we looked at the SQL Server engine. for us DBAs, the...
By Arun Sirpal
You have used Claude. But which Claude? The Claude app (claude.ai, the desktop and...
Comments posted to this topic are about the item Creating a JSON Document IV
By VishnuGupthanSQLPowershellDBA
Comments posted to this topic are about the item Restoring Azure Key Vault Keys...
When the schema of an object is changed, SQL Server wipes out the previous...
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT YearEstablished, json_objectagg(city : TeamName) FROM dbo.NFLTeams GROUP BY YearEstablished;See possible answers