github.com/matrixorigin/matrixone@v0.7.0/test/distributed/cases/plan_cache/plan_cache.result (about) 1 drop table if exists test1; 2 create table test1(t timestamp); 3 insert into test1 values(now()); 4 insert into test1 values(now()); 5 insert into test1 values(now()); 6 insert into test1 values(now()); 7 select count(1) from test1 group by t; 8 count(1) 9 1 10 1 11 1 12 1 13 drop table if exists test2; 14 create table test2(s char(26)); 15 insert into test2 values(substr(now(),1,26)); 16 insert into test2 values(substr(now(),1,26)); 17 insert into test2 values(substr(now(),1,26)); 18 insert into test2 values(substr(now(),1,26)); 19 select count(1) from test2 group by s; 20 count(1) 21 1 22 1 23 1 24 1 25 drop table if exists test3; 26 create table test3(s char(25)); 27 insert into test3 values(substr(substr(now(),1,26),2,25)); 28 insert into test3 values(substr(substr(now(),1,26),2,25)); 29 insert into test3 values(substr(substr(now(),1,26),2,25)); 30 insert into test3 values(substr(substr(now(),1,26),2,25)); 31 select count(1) from test3 group by s; 32 count(1) 33 1 34 1 35 1 36 1