casting count - subtle aggregation differences

[chrismo]

#!/usr/bin/env bash

set -euo pipefail

export ASDF_SUPERDB_VERSION=0.50930

super --version

seq 1 10 | super -c "count()" -
seq 1 10 | super -c "count()::int64" -
seq 1 10 | super -c "cast(count(), <int64>)" -
seq 1 10 | super -c "count() | this::int64" -

I think it's subtle because of the syntax. If we were to call cast in the 2nd example, super going into expression context might be more obvious (the 3rd is the equivalent of the 2nd).