LIMIT and orderby DESC in tick script

How can I get the last "n" values in tick script. In influxDB query search I could do it through
`order by DESC and LIMIT n`. Where n is the number of last few values I want to retrieve.

Start by checking the Tick script query documentation and existing examples for ordering and limits. Compare the requested `order by DESC` and `LIMIT n` behavior with current Kapacitor support, then identify the relevant query entry point and tests. Done means the last n values can be retrieved with documented behavior and coverage.

Written by the indexing model from the issue text.