Moving 1/3 of a heap
Watch this week's video on YouTube
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
16 reads
Bert Wagner
COMING SOON – New Content
Hey everyone. Long time no chat. I wanted to write this quick post to let you know why there haven’t been any videos in a while. If you are...
2020-07-16
19 reads
COMING SOON - New Content
Watch this week's video on YouTube
Hey everyone. Long time no chat. I wanted to write this quick post to let you know why there haven't been any videos in...
2020-07-16
14 reads
COMING SOON - New Content
Watch this week's video on YouTube
Hey everyone. Long time no chat. I wanted to write this quick post to let you know why there haven't been any videos in...
2020-07-16
4 reads
Using Python And NetworkX To Build A Twitter Follower Recommendation Engine
Watch this week’s video on YouTube. This week, I want to share my process for analyzing Twitter. Specifically, I want to find who all of my friends follow on...
2020-01-14 (first published: 2020-01-07)
298 reads
Using Python And NetworkX To Build A Twitter Follower Recommendation Engine
Watch this week's video on YouTube
This week, I want to share my process for analyzing Twitter. Specifically, I want to find who all of my friends follow on Twitter...
2020-01-07
18 reads
Using Python And NetworkX To Build A Twitter Follower Recommendation Engine
Watch this week's video on YouTube
This week, I want to share my process for analyzing Twitter. Specifically, I want to find who all of my friends follow on Twitter...
2020-01-07
8 reads
SQL Server Converts Numbers to Asterisks
Watch this week’s episode on YouTube. Pop quiz: What will be the output of the below three statements? As you might have guessed, the first conversion truncates the value,...
2019-12-17
229 reads
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
9 reads
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
12 reads
Blogs
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Cognitive Coverage
Comments posted to this topic are about the item Cognitive Coverage
Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers