This question made me think of a new tag for 'query-optimization' or 'query-tuning'. However it was pointed out that this type of tag might be a duplicate for other SE sites. To me, it seems 'query' is too general and if we're going to allow questions of that nature (and imo, we should; but that's another topic I guess) we should be more specific on the purpose of the question. Alternatively, it could be tagged as 'query' and 'optimization'.
Thoughts?