ClickHouse/tests/queries/0_stateless/02808_aliases_inside_case.sql

# We support specifying aliases in any place in the query, including CASE expression:

with arrayJoin([1,2]) as arg
select arg,
       (case
           when arg = 1
           then 1 as one
           when arg = 2
           then one / 2
       end) as imposible;