Object Types and Object-Oriented Development with PL/SQL: the Series
Find below the list of my blog posts in a series on working with object types (a.k.a, classes) in Oracle Database and, specifically, PL/SQL.This series is not intended to offer an in-depth training on...
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Always Free Autonomous Oracle Database: Let's get going!
On September 16, Larry Ellison announced a new Always Free tier for Oracle Cloud, which (for me) most importantly includes an Always Free Autonomous Oracle Database.For nothing but the "cost" of...
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Using Always Free Autonomous Database to help me heal our planet
I signed up for my Always Free Autonomous Database (AFAD) and a boatload of other cloud services. OK, what shall I do with them?Hmmm....well....as some of you may know, I've gotten very concerned about...
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Using Object Types in Relational Tables, Part 4
So far in my series on object-oriented development in Oracle Database, all manipulation of object type instances have taken place in PL/SQL.But as you may have guessed from the fact that you "CREATE OR...
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Groundbreaker Appreciation: Those Who Give of Themselves
I've been working - and personally benefiting from - Oracle Database technology since 1987. I joined Oracle as a pre-sales consultant, which meant back then I was a techie sidekick for one or more...
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Comparison Methods for Object Types, Part 5
There are special member methods - map or order methods - that we use to tell Oracle Database how to compare two objects of the same datatype. This capability is critical when we want to perform an...
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Real World Testing of PL/SQL Code - An Office Hours Session
Since February 2019, I've been running, with Chris Saxon, on my team of Developer Advocates, monthly PL/SQL Office Hours sessions. They generally consist of short presentations on a PL/SQL-related...
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Why isn't my exception section catching my error?
I got an interesting email today from a reader of one of my PL/SQL 101" articles for Oracle Magazine, Building with Blocks.Q. had taken the code from the article, made some changes, tried to run them,...
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PL/SQL Puzzle: Add one statement to stop exceptions
OK, folks, here's a PL/SQL puzzle. It was originally posted on Twitter. I give you the link to that thread at the end of this post. But first....don't you want to try to solve the puzzle yourself?...
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PL/SQL Puzzle: What code can be removed?
I published a PL/SQL puzzle on Twitter on November 6 2019. I asked the following question:Which lines of code can be removed (either entirely or in part) from the block below and not affect the output...
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PL/SQL Puzzle: No extra code please!
I published yet another PL/SQL puzzle on Twitter yesterday. Generated lots of interest and interesting replies. I don't think any single person caught everything, but as usual the community came...
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PL/SQL Office Hours December 3: Tips on Writing PL/SQL in APEX Apps
I am very pleased that for our December 3 9 AM Eastern AskTOM Office Hours session, three deeply experienced and highly respected APEX pros will join me to share their wisdom on how best to write and...
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PL/SQL Puzzle: what assumptions am I making?
Almost certainly, whenever you write a procedure or function, you make certain assumptions. Some of them are quite reasonable, such as "I assume my database is up and running." Some of them are scary,...
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Wait, that's NOT a reserved word?
When it comes to PL/SQL puzzles via Twitter, I decided to change things up this week. I presented it as multiple choice this time.Here's the puzzle:After executing the code shown in the image what will...
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Dynamic Polymorphism - Why, What, How
Dynamic means "run-time."Polymorphism means "multiple shapes."Synonyms for dynamic polymorphism include "runtime polymorphism" and "dynamic method dispatch."If you are a "traditional" relational...
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PL/SQL Puzzle: when implicit conversions come calling
I posted the following puzzle on Twitter:A quick little #PLSQL puzzle: I set serveroutput on. After running the code you see in the block below, what will be displayed on the screen?Try it yourself...
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PL/SQL Office Hours: DB Setup and Teardown for Automated Testing
On January 14, 2020 at 9 AM Eastern, I am very pleased to hold a PL/SQL Office Hours session on one of the biggest challenges faced by developers setting up automated tests for database code: setup and...
View ArticleOracle Dev Gym PL/SQL Championship for 2019 Players
Throughout 2019, over 1200 Oracle Database developers participated in the Oracle Dev Gym PL/SQL Challenge weekly tournament. The top 50 ranked players shown below will compete for top honors in a...
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PL/SQL Puzzle: Getting the "right" error message to appear
I posted the following puzzle on Twitter:What change(s) can you make to this code so that "ORA-00001: unique constraint" appears on the screen after execution?Try it yourself before reading the rest of...
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PL/SQL Office Hours: Virtual Private Database in the Wild
Virtual Private Database (VPD), also referred to as row-level security or RLS, is a feature built into the Oracle Database that allows you to set up security policies on tables that restrict which rows...
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