SQLServerCentral Article

SQL Server Tacklebox

Inside the SQL Server Tacklebox you'll find day-to-day tools and techniques to automate and standardize SQL Server installation, document and report on your servers, migrate data and manage data growth, troubleshoot performance issues, receive notifications of impending issues, secure access to your servers and fight off the data corruption monster.

2017-11-03

7,316 reads

External Article

Finding Data Corruption

Rodney describes how a working DBA goes about troubleshooting data corruption. He demonstrates the tools and scripts required to seek out and fix data corruption in a timely manner, and so prevent it propagating into your backups.

2009-10-15

3,754 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]
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