Select and delete rows within groups using mysql?

I have these tested, working independently - though the 2nd must be executed after the 1st to get the results you provided in your example. I am having some difficulty getting them to work as one Select, as the 2nd query is dependent upon the state of the table after the 1st is complete...

Your first problem will be solved by the below query, just you need to to do a subselect.

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