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Noticias del Blog de CYBERTEC PostgreSQL
Handling Bonus Programs in SQL
Bonus cards, “Miles & more”, bonus points – don’t we all love and hate them at the same time? Recently we had an interesting use case which made me think about sharing some of the techniques we used in this area to reduce client code by writing some clever SQL. This post will show you […]
Transaction anomalies with SELECT FOR UPDATE
© Laurenz Albe 2022 I was recently confronted with a nice example of how adding FOR UPDATE to a query can introduce transaction anomalies. This article will explain how that happens and how you can cope with the problem. Be ready to learn some PostgreSQL implementation details! The example Setting the stage We have a […]
Debugging deadlocks in PostgreSQL
© Laurenz Albe 2022 Even if you understand what a deadlock is, debugging deadlocks can be tricky. This article shows some techniques on how to figure out the cause of a deadlock. A simple deadlock example Setting the stage We will test our techniques for debugging deadlocks with the following example: The deadlock To provoke […]