Tag: trigger

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Broken foreign keys: how can that happen in PostgreSQL?

by Laurenz Albe | 12.2023
  One of the fundamental requirements for a relational database is that the transaction system always maintains consistency. That means […]

Using multiple triggers on the same table in PostgreSQL

by Hans-Jürgen Schönig | 11.2023
“Developers, developers, developers, …” - let us not remind ourselves of this painful Microsoft presentation which was given by Mr […]

Why are my PostgreSQL updates getting slower?

by Laurenz Albe | 10.2022
  Recently, a customer asked me why a bulk load into a PostgreSQL table kept slowing down as time went […]

Automatic partition creation in PostgreSQL

by Laurenz Albe | 02.2022
  Table partitioning is one of the best-liked features out of the more recent PostgreSQL developments. However, there is no […]

What to return from a PostgreSQL row level trigger?

by Laurenz Albe | 04.2021
  In this article, I'll talk about row level triggers, which are the most frequently used kind of triggers. I […]

PostgreSQL: How to write a trigger

by Hans-Jürgen Schönig | 02.2021
Just like in most databases, in PostgreSQL a trigger is a way to automatically respond to events. Maybe you want […]

Performance differences between normal and generic audit triggers

by CYBERTEC Guest | 04.2020
What are the performance differences between normal and generic audit triggers? Recently I was talking in a more general way […]

Triggers to enforce constraints in PostgreSQL

by Laurenz Albe | 04.2019
  Sometimes you want to enforce a condition on a table that cannot be implemented by a constraint. In such […]

Rules or triggers to log bulk updates?

by Laurenz Albe | 07.2018
  Inspired by my co-worker's recent blog post, I decided to revisit the old question of rules vs. triggers and […]

More on Postgres trigger performance

by CYBERTEC Guest | 06.2018
By Kaarel Moppel - In my last post I described what to expect from simple PL/pgSQL triggers in performance degradation […]
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