Incremental Data Loading Using ADF and Change Tracking
This article looks at moving data in three related tables to Azure SQL Database using the change tracking feature in SQL Server to determine which rows have been changed.
2021-10-04
8,233 reads
Azure Data Factory
2021-10-01
390 reads
Working with the Delete Activity in Azure Data Factory
Introduction We can use the delete activity in Azure Data Factory to delete files from both on-premises and cloud storage. In this article, we will discuss the delete activity with the various options available for the file deletion. I will show the following operations with the Delete Activity: Delete files from a folder. Delete contents […]
2021-09-27
15,874 reads
How to Flatten JSON in Azure Data Factory?
When you work with ETL and the source file is JSON, many documents may get nested attributes in the JSON file. Your requirements will often dictate that you flatten those nested attributes. There are many ways you can flatten the JSON hierarchy, however; I am going to share my experiences with Azure Data Factory (ADF) […]
2021-09-17
20,554 reads
Azure Data Factory Incremental Pipeline from Azure SQL Database to Databricks
In this tip find out how to use Azure Data factory to build an incremental pipeline from Azure SQL Database to Databricks.
2021-08-25
Working with Get Metadata Activity in Azure Data Factory
Learn how to gather metadata information about the files being processed in your ADF pipeline.
2021-08-20
23,837 reads
Merge Multiple Files in Azure Data Factory
A short tutorial on how to combine multiple files together in an Azure Data Factory Copy Data activity.
2021-08-04
28,141 reads
Why Power Query as an Activity in Azure Data Factory and SSIS?
There is a Power Query activity in SSIS and Azure Data Factory, which can be more useful than other tasks in some situations.
2021-07-26
4,512 reads
Upsert Operation in Cosmos DB using Azure Data Factory
This article covers the basics of upserting data in CosmosDB using Azure Data Factory.
2021-07-23
15,887 reads
Mapping Data Flows in Azure Data Factory
This article helps to create a data flow in Azure Data Factory, add conditional split logic to the flow, and transfer data from a file to an Azure SQL Database.
2021-07-05 (first published: 2021-06-04)
6,041 reads
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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] GOWhat 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