How LAG compares to other techniques
LAG pulls a column from another row without a self-join. In this article, Kathi Kellenberger shows how LAG compares to other techniques
2021-09-24
Articles
PostgreSQL Date And Time Part 2
In the second part of this PostgreSQL date time series, we examine a number of commonly used functions for getting current dates and times and converting strings to dates and times.
2021-09-22
3,597 reads
Use SQLAlchemy ORMs to Access MongoDB Data in Python
The wide ecosystem of Python modules enables you get to work fast and effectively integrate your systems. You can use the CData Python Connector for MongoDB and the SQLAlchemy toolkit to build MongoDB-connected Python applications and scripts. This article details how to use SQLAlchemy to connect to MongoDB data to query, update, delete, and insert MongoDB data. Connecting to MongoDB Data Connecting to MongoDB data is similar to connecting to any other relational database. Create a […]
2021-09-22
4,602 reads
Real-Time Streaming using Power BI Streaming Dataset
In this tip we will look at using a Streaming Dataset in Power BI to visualize real time data using the streaming service Azure Stream Analytics job.
2021-09-22
What's the real story behind the explosive growth of data?
IDC’s recent Global DataSphere Forecast, 2021-2025 predicts that global data creation and replication will experience a compound annual growth rate of 23% over the forecast period. But what’s causing the growth? Where will all of that extra data be stored? And how should we, as data professionals, prepare for it? Read this blog to explore these important questions.
2021-09-22
Author Power BI Reports on Real-Time ServiceNow Data
This article shows in detail how to use the Power BI Connector to create real-time visualizations of ServiceNow data in Microsoft Power BI Desktop.
2021-09-20
1,661 reads
Azure SQL Migrations using Azure Data Studio
This article looks at database migration with the Azure Data Studio extension, making it easy to move databases from an on premises SQL Server to one in Azure.
2021-09-20
7,680 reads
The Azure SQL portfolio
Microsoft provides many ways to run SQL Server in Azure, but which do you choose? In this article, Robert Sheldon explains the Azure SQL options.
2021-09-20
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
20,556 reads
Flyway Without the Typing
How to use Flyway configuration files to minimize typing during ad-hoc development from PowerShell or DOS; you just type in the Flyway commands you need and hit "go" and the config files take care of all the tiresome connection, authentication and project details.
2021-09-17
Blogs
How to Clear the SSMS Cache (SSMS 21 and Later)
By SQLPals
How to Clear the SSMS Cache (SSMS 21 and Later) Updated...
The flight recorder: Replaying what an AI agent did on my SQL Server
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
Announcements from the Microsoft Fabric Community Conference — Barcelona 2026
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
Forums
Let's Talk Certifications
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The Hidden Security Risks of Role Combination in SSAS Tabular
Comments posted to this topic are about the item The Hidden Security Risks of...
The Empty Aggregate
Comments posted to this topic are about the item The Empty Aggregate
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