November 2019
Beginner to intermediate
470 pages
11h 59m
English
Content preview from Mastering PostgreSQL 12 - Third Edition
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Making use of GET DIAGNOSTICS
Many people who have used Oracle in the past might be familiar with the GET DIAGNOSTICS clause. The idea behind the GET DIAGNOSTICS clause is to allow users to see what is going on in the system. While the syntax might appear a bit strange to people who are used to modern code, it is still a valuable tool that can make your applications better.
From my point of view, there are two main tasks that the GET DIAGNOSTICS clause can be used for:
- Inspecting the row count
- Fetching context information and getting a backtrace
Inspecting the row count is definitely something that you will need during everyday programming. Extracting context information will be useful if you want to debug applications.
The following example ...
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