// the following queries all return no rows in H2

selectConstAggregationWithGroupBy
SELECT 1 a, COUNT(*) b, MAX(1) c FROM empty_mapping GROUP BY a;

       a:i     |       b:l     |       c:i
---------------+---------------+---------------
1              |2              |1
;

subselectWithConst
SELECT 1, * FROM (SELECT * FROM empty_mapping) s;

       1:i
---------------
1
1
;

subselectWithInnerConst
SELECT * FROM (SELECT 1, * FROM empty_mapping) s;

       1:i
---------------
1
1
;