I want to be able to change the behavior of some functions based on custom runtime variables.

I added the following lines to my postgresql.conf file:

custom_variable_classes = 'foo'
foo.name = '1s'

Now if I do "show foo.name" I get '1s'
But it does not show up in show all or in pg_settings.

I didn't find much in the way of documentation. How does one access the value of foo.name from a plpgsql or sql function?

Also, can the variable be stored in a specific data type or am I stuck with text?



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