Arjun Sivadasan

Hi, I am Arjun Sivadasan. I am a Data Engineering and Analytics manager with 14 years of experience. I have worked in various data-focused roles, developing and maintaining mission critical data-driven solutions in transaction and analytics environments. I am adept at mapping business goals to technology road map. Most of my work has been on data strategy, data architecture, data platform modernization and analytics. I enjoy speaking about databases and analytics at local user group events.
  • Interests: Cycling, Cooking, Motorbikes

SQLServerCentral Article

Azure Cosmos DB – HTAP using Azure Synapse Link

In this article, we will explore the HTAP capabilities of Cosmos DB. The goal is to derive real-time insights from transactional changes made to Cosmos DB, in a cost-effective manner with minimal overhead. I want the solution to be scalable, reliable and overall simple to maintain.

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2021-11-03

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The Empty Aggregate

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Question of the Day

The Empty Aggregate

I have this table in a SQL Server 2025 database:

CREATE TABLE [dbo].[CustomerOrder]
(
[OrderID] [int] NULL,
[CustomerID] [int] NULL,
[total] [money] NULL
) ON [PRIMARY]
GO
What is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
       COUNT(total) AS count
FROM dbo.CustomerOrder;



See possible answers