I can't speak as to other's experience but the one thing I found more complex was the user account side of things. Certainly compared to mysql's simple username

I can't speak as to other's experience but the one thing I found more complex was the user account side of things. Certainly compared to mysql's simple username / password system there was a lot more to understand to set it up. I'm much happier with it now, and it's a way more robust system – but it was a hurdle to get over. Other than that I found it a dream to work with straight away (though I have plenty of prior RDBMS experience to draw on).