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Concatenate a List of Strings in PL/SQL
How to concatenate a list of Strings in PL/SQL?
This blog-post shows 4 different approaches.
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PL/SQL Object Types: putting the Structure into the Force Powers Table
Object Types are a very useful thing when used in PL/SQL, but Oracle even allows us to have them inside a table.
Let’s see how we can put the numeric_strucutre-logic inside the Force Powers table and use indizes on the new column.
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Structure Force Powers with PL/SQL Object Types
Modern SQL and especially PL/SQL is turing complete and can be used to solve every problem, but Oracle SQL Types can help greatly to do it in a much more readable way.
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Narrate Star Wars Movies with utPLSQL annotations
Did you know you can narrate the story of the Star Wars movies with utPLSQL annotations?
In this blog post I show you how and list 4 takeaways you might not have known.
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More Pitfalls of the MINUS comparison
Comparing the results of 2 queries is a task more complicated than I thought initially.
I show some more pitfalls of the MINUS approach (which I still find convenient in some cases) and alternatives.
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Testing the Deathstar security with utPLSQL contexts
The context-feature of #utPLSQL can greatly help to organize your tests and reduce the setup/teardown time of tests.
Learn how to use them to test the Deathstar security system.
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Updating a Table with the Values of a Different One
I am working professionally with databases for over 15 years now and have a huge focus on Oracle – but I really keep forgetting how to update a table with values of a different one (this is one thing which is so much easier in SQL Server by the way).
Therefore let’s assume we have a table containing planets and one containing garrisons which are on these planets.
| Garrison ID | Planet Name | Planet Faction |
| 1 | Korriban | imperium |
| 2 | Korriban | imperium |
| 3 | Dromund Kaas | imperium |
| 4 | Hoth | republic |
We would now like to have a new column in the garrisons table which can contain a name.
alter table garrisons add name varchar2(300)
The imperial side now has a request to update all their garrisons with a name according to this schema: <PlanetName> (<Garrison ID>)
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Pitfalls of the MINUS-comparison
The MINUS comparison of two views (or other statements) is a powerful tool to check the validity of a new, rewritten approach I use often.
However, be aware of
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#100CodeExamples – Test updatable views with utPLSQL Cursors
If it comes to testing updatable views, the use of nested tables from ROWTYPE records in combination with utPLSQL’s cursor comparison is invaluable.
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#100CodeExamples – Constants in PL/SQL and SQL
Constants help us lazy devs in many ways, reduce the likelyness of unnoticed typos and prevent a given value from changing.
While PL/SQL supports them, it’s a bit tricky to get them into SQL.