Round date to 10 minutes interval

Question

I have a DATE column that I want to round to the next-lower 10 minute interval in a query (see example below).

I managed to do it by truncating the seconds

Answer 1

You could take the returned value as a string and substring the left side up to the last minute digit and replace it with a 0. I wouldn't exactly say thats better unless you provide some kind of metric.