*****After much adieu, I’ve finally returned to this post to rewrite what concerned me and befuddled others… :)***** I’ve worked with some great developers.  Developers who can write code in their sleep to perform the most complex functions and aggregations, (makes me quite envious, as I need to actually think how to write code… :))  Most of these developers are still tripped up by the Oracle Cost Based Optimizer, (CBO) and honestly, I think they should be.  Just how I have to think about how to code, it should be expected that they need to think about how the CBO works. …