mariadb/mysql-test/r/bench_count_distinct.result
2004-05-13 23:47:20 +03:00

11 lines
412 B
Text

drop table if exists t1;
create table t1(n int not null, key(n)) delay_key_write = 1;
select count(distinct n) from t1;
count(distinct n)
100
explain extended select count(distinct n) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL n 4 NULL 200 Using index
Warnings:
Note 1003 select count(distinct test.t1.n) AS `count(distinct n)` from test.t1
drop table t1;