We use Postico for managing our Postgres database at work.
I made a Keyboard Maestro macro called “Open DB Table.” It has no trigger. Instead, it needs to be triggered by a url and that url needs to contain a value. In this case the value is the name of the table you want to open.
The macro activates Postico, types ⌘P which is the keyboard shortcut for “Open quickly…”, it then types in the trigger value (the name of the table), waits half a second, and then hits the return key.
This only works if Postico is already open and in the right database.
The way I used this is by making a simple web page with a list of links for each table. The links look something like this:
You can download the macro here: Open DB Table macro