Articles

SQLServerCentral Article

Connect to PostgreSQL as an External Data Source using PolyBase

PolyBase is a new feature of SQL Server that allows you to connect to relational and non-relational data. You can run queries on any external data sources you might have, such as Oracle, PostgreSQL, Salesforce, MongoDB, Hadoop, etc. When paired with the CData ODBC Driver for PostgreSQL, you get access to your PostgreSQL data directly […]

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2021-10-18

2,634 reads

Blogs

How to Clear the SSMS Cache (SSMS 21 and Later)

By

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

“What exactly did it do on my server?” is the first question a DBA...

Announcements from the Microsoft Fabric Community Conference — Barcelona 2026

By

Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...

Read the latest Blogs

Forums

Let's Talk Certifications

By Grant Fritchey

Comments posted to this topic are about the item Let's Talk Certifications

The Hidden Security Risks of Role Combination in SSAS Tabular

By Pablo Echeverria

Comments posted to this topic are about the item The Hidden Security Risks of...

The Empty Aggregate

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The Empty Aggregate

Visit the forum

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