It's not obvious to me why this needs to be closed.
Is it an awesome question? No, it's not. But what actually makes it closable?
It's only clearly-defined crime is being easy.
Easy isn't off-topic. Easy isn't argumentative. You want to downvote this for being remedial? I wouldn't, because discouraging people who are neophytes for not being experts doesn't appeal to me, but I get that. It's certainly not deserving of up-votes.
But close it?? Being easy isn't a legitimate reason. "Not putting in enough effort" is starting to be a better argument, but in this case, it's just not reasonable as a closing justification because:
- the answers don't take much effort, so there's not much work imbalance, and
- adding more "what I tried" here wouldn't help us any - we can all figure out what the problem is (SQL has built-in functions to round to decimal places, but not to other intervals)
So the additional effort we want here wouldn't make the question more answerable; it makes us feel better about the OP's willingness to adjust to our conventions. And that's not how we should be closing questions. All the talk about the OP's general quality of post should be similarly irrelevant. It should be about the post, not the poster.
I do agree that putting in more effort, perhaps by indicating what you've done, etc.is actually a good thing to teach. So even though it wouldn't help us answer, I'd agree that asking the OP to add what they tried as a nice comment is good education.
But the lack of it doesn't make it unanswerable, or unclear, or un-anything. It just leaves it as a pretty remedial question. Which is still on-topic, unless it's a dupe (as is often the case.)