create table t (a integer); | |
explain select not ((a>0) is not true) from t group by a; | |
explain select not ((a>0) is not false) from t group by a; | |
explain select not ((a>0) is not null) from t group by a; | |
explain select not ((a>0) is true) from t group by a; | |
explain select not ((a>0) is false) from t group by a; | |
explain select not ((a>0) is null) from t group by a; |