8/27/2023 0 Comments Postgresql insert triggerSQL files are neat because we can lint them to make them (a little bit) more readable. In this code, we put our PL/pgSQL code in plain SQL files in a sql directory. But Django has a powerful migration system that makes it easy to create or update our triggers in the database. In Django, there is no built-in way to manage triggers, like you can find in Rails with Gems like hair_trigger. How can we be sure triggers are up to date in the database? Now, let’s see how we overcame the flaws often mentioned about triggers: poorly integrated into the development flow, difficult to write and maintain, difficult to debug and observe. This function is then set to be triggered for each row inserted in the occurrence table. Using PL/pgSQL, the code would look like this:įirst, we create a function where values of the newly inserted row are available in the NEW variable, and where the TG_OP variable tells us from which operation it is called on. We add an “occurrences_count” field in the “incident” table, and each time an occurrence is inserted, a trigger will increment incident.occurrences_count. Let’s say we want to precompute the count of occurrences of an Incident. Hence our idea of using triggers to precompute aggregates. Since they are all expensive aggregations, we were facing a bottleneck when trying to compute them on the fly. Simplified data model of GitGuardian's business objectsĪll those incidents’ properties and many more are displayed on the GitGuardian Internal Monitoring dashboard: involved repositories and developers, if the Secret was found in test files or not, detected during a historical scan, etc… if a new Occurrence of an Incident considered as resolved is found, the incident must be reopened.
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