Has anyone done the upgrade from 4.4.2 to 4.5.0 with the underlying database being PostgreSQL?

What sort of things were encountered along the way?

Reason I'm asking is that my previous experiences with updating drupal was that the upgrade process seemed to assume that one was using MySQL and that there was always some oddball change I had to make to any supplied SQL scripts. I've got three sites that I want to upgrade in the next month or so and wish for this to go as smooth as silk.

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TIA