DROP TABLE IF EXISTS group_by_all; CREATE TABLE group_by_all ( a String, b int, c int ) engine = Memory; insert into group_by_all values ('abc1', 1, 1), ('abc2', 1, 1), ('abc3', 1, 1), ('abc4', 1, 1); select a, count(b) from group_by_all group by all order by a; select substring(a, 1, 3), count(b) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, 1, 2), 1, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, 1, 2), c, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, c, 2), c, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, c + 1, 2), 1, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, c + 1, 2), c, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(substring(a, c, count(b)), 1, count(b)), 1, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(a, 1, count(b)) from group_by_all group by all; select count(b) AS len, substring(a, 1, 3), substring(a, 1, len) from group_by_all group by all; SET allow_experimental_analyzer = 1; select a, count(b) from group_by_all group by all order by a; select substring(a, 1, 3), count(b) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, 1, 2), 1, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, 1, 2), c, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, c, 2), c, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, c + 1, 2), 1, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(a, c + 1, 2), c, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(substring(substring(a, c, count(b)), 1, count(b)), 1, count(b)) from group_by_all group by all; select substring(a, 1, 3), substring(a, 1, count(b)) from group_by_all group by all; select count(b) AS len, substring(a, 1, 3), substring(a, 1, len) from group_by_all group by all;