One Flyway Migration Script for Diverse Database Systems
How to create a single set of SQL migration scripts for Flyway that we can use across multiple database systems, or for all regional variants of a database.
2021-09-08
Articles
How To Find A Perfect Match
This article presents a way that finds a perfect match in any bipartite graph or shows why one cannot exist.
2021-09-06
2,993 reads
Plotting in Python for Financial Time Series Data for Exponential Moving Averages
Learn how to plot a financial time series using SQL Server data and Python to reveal the value of exponential moving averages and make decisions about time series values.
2021-09-06
Sharing knowledge in communities of practice
Communities of practice bring people together to share ideas and learn from each other about a common interest. In this article, Robert Sheldon explains and gives some advice on starting them.
2021-09-06
Use SQL Server Integration Services to Add HubSpot Contacts to MailChimp Lists
SSIS stands for SQL Server Integration Services and is a solution for building data integrations and workflow applications that integrate with SQL Server databases. As data integration processes increase in importance, organizations are looking for ways to simplify integration and manage workflows. In this article, we'll walk you through how to design a data flow that adds new HubSpot contacts to a MailChimp list using CData SSIS Components for HubSpot and MailChimp. Connecting to HubSpot and MailChimp The […]
2021-09-03 (first published: 2021-08-17)
724 reads
Create, Populate, and Subset a Pandas Dataframe from a CSV File
In this article we demonstrate how to transfer data via a CSV file from a SQL Server database to a Pandas dataframe and then subset the dataframe in Python.
2021-09-03
Connect to and Query Salesforce Data in QlikView
This short article shows how to connect to Salesforce data with CData and produce a chart from a query.
2021-09-01
677 reads
Discovering What’s Changed by Flyway Migrations
A set of PowerShell cmdlets that will 'diff' two versions of a database and provide a high-level overview of the major database changes made by successive Flyway migrations. You can 'diff' a SQL Server database to the same one on PostgreSQL and find out which objects are the same and which are different.
2021-09-01
Join SQL Server tables where columns include NULL values
Dealing with NULL values especially when joining tables can become a challenge. Let's take a look at this issue and how this can be resolved.
2021-09-01
Tracking Failed Job Steps
Recently a customer was asking for a way to alert on job steps that failed, but the job succeeded. They really wanted a custom metric for SQL Monitor, which I submitted, but this post looks at the query in general, trying to determine if a job step failed. Note: Let me start by noting that […]
2021-08-30
7,821 reads
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