Hi @Valentin GARREAU Welcome to the Microsoft Q&A platform, thanks for posting the question
As I understand you want to know if the plpython3u extension can be used in PostgreSQL databases.
All the supported extensions can be found under Portal > Azure Database for PostgreSQL > [your server name] > Server Parameters > Parameter name = azure.extensions
please refer to the documentation here
I don’t see that extension listed as an option, and I don’t believe it’s possible to add extensions that are not on the list.
I hope this information helps, let me know if you have any additional questions.
Regards
Geetha
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