:sort
The :sort operator allow you to sort rows by some sequence of expressions.
:sort should be used in the terminal position of a query (e.g the last operation), otherwise the sort is not guaranteed.
:sort takes vectors of [expr (:asc OR :desc)] for ascending and descending sorts.
You can use any row expression in each sort expression as long all values are Comparable.
Uses a btree index internally, so that it can be materialized.