Bert Wagner

Blog Post

Moving 1/3 of a heap

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A Giant Heap
Recently I had to filter out 1.2 billion records from a 3.5 billion row heap. Don't ask me why this 3.5 billion...

2020-07-22

26 reads

Blog Post

SQL Server Converts Numbers to Asterisks

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Pop quiz: What will be the output of the below three statements?
DECLARE @val_varchar varchar(3) = '100';
DECLARE @val_bigint bigint = 100;
DECLARE @val_tinyint tinyint = 100;

PRINT('varchar...

2019-12-17

22 reads

Blog Post

SQL Server Converts Numbers to Asterisks

Watch this week's video on YouTube
Pop quiz: What will be the output of the below three statements?
DECLARE @val_varchar varchar(3) = '100';
DECLARE @val_bigint bigint = 100;
DECLARE @val_tinyint tinyint = 100;

PRINT('varchar...

2019-12-17

20 reads

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Let's Talk Certifications

By Grant Fritchey

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The Hidden Security Risks of Role Combination in SSAS Tabular

By Pablo Echeverria

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The Empty Aggregate

By Steve Jones - SSC Editor

Comments posted to this topic are about the item 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