The “best” tool
I had a question the other day that constantly pops up on my feed whether it’s on social media or people asking Q&A at a conference etc. And that...
2026-07-15 (first published: 2026-07-13)
152 reads
Tip: Expanding a SQL statement
In all recent versions of the database you can call DBMS_UTILITY.EXPAND_SQL_TEXT to get the “true” version of a SQL that the database will run. It takes your SQL as...
2026-07-03 (first published: 2026-07-02)
148 reads
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but I’d like to apply the Goldilocks principle to a database object-namely, a materialized view. You...
2026-06-30
146 reads
Blue Sky Programming – The Optimism Trap
Many years ago, before I joined Oracle, I was working on a major modernisation project. We were replacing an existing non-Oracle system with an entirely new Oracle database application...
2026-06-27 (first published: 2026-06-26)
150 reads
Keeping your tech ego in check
In my usual twitter doom scrolling, I came across this post the other day Now it’s pretty obvious to me that this is one of the standard “engagement bait”...
2026-06-07
125 reads
First dabblings with APEXlang
Obviously there are plenty of folks in the Oracle APEX team with waaaayy more experience in APEXlang than I have, so this isn’t an in-depth expose into all of...
2026-05-27
96 reads
Vanishing objects; hello ORA-08103
In the previous post we saw that even though we had done an exchange partition mid-flights through a query execution, the query kept on running to successful completion. The...
2026-05-13
198 reads
A very robust query
Some times I’m blown away by how the database will try very hard to save you from yourself :-). Consider the following example: I’ve got a table called T....
2026-05-12
175 reads
The secret APEX performance hack
Here’s a little secret APEX performance hack if you are running on the Autonomous database. As background, I’m running an Autonomous database with six CPUs and a terabyte of...
2026-05-08
126 reads
Signal to noise ratio – the AWR trap
Its never been easier to analyze an AWR report. With our new oracle skills repository, your favourite agent can do a respectable job giving some insights into the AWR...
2026-05-06
131 reads
Blogs
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...
Au Revoir for now
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
Forums
Let's Talk Certifications
Comments posted to this topic are about the item Let's Talk Certifications, which is...
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