ETL/SSIS/Azure Data Factory

SQLServerCentral Article

How to simulate Case statement in Azure Data Factory (ADF) compared with SSIS?

  • Article

This post will describe how you use a CASE statement in Azure Data Factory (ADF). If you are coming from SSIS background, you know a piece of SQL statement will do the task. However let's see how do it in SSIS and the very same thing can be achieved in ADF. Problem statement For my […]

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2020-11-12

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SQLServerCentral Article

Incremental Data Loading using Azure Data Factory

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Introduction In my last article, Loading data in Azure Synapse Analytics using Azure Data Factory, I discussed the step-by-step process for loading data from an Azure storage account to Azure Synapse SQL through Azure Data Factory (ADF). ADF basics are covered in that article. In this article I will go through the process for the incremental […]

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2020-09-24

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SQLServerCentral Article

Modular ETL Architecture Design in SSIS

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Overview of ETL Architecture In a data warehouse, one of the main parts of the entire system is the ETL process. ETL is the system that reads data from the source system, transforms the data according to the business logic, and finally loads it into the warehouse. While fetching data from the sources can seem […]

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2019-10-21

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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