I learn Mathematica on my own, and use it on my scientific studies. Sometimes there are some well known commands, trivial features, or keywords that I don't know. I ask my questions to SE community and occasionally my questions are lousy due to my lack of mainstream knowledge. (Like that one.)
Should I erase those types of questions? or leave it on the site? What is the usual procedure for those (I thought it may broke the integrity or encourage another person to ask another lousy question).