MariaDB [test]> create table t1 (i int, j int) partition by list columns(i,j) (partition p1 values in ((10,10)), partition p2 default);

Query OK, 0 rows affected (0.65 sec)

MariaDB [test]> insert into t1 values (10,1);

Query OK, 1 row affected (0.06 sec)

MariaDB [test]> select * from t1 where i = 10;

Empty set (0.00 sec)

MariaDB [test]> explain partitions select * from t1 where i = 10;

+------+-------------+-------+------------+------+---------------+------+---------+------+------+-------------+

| id   | select_type | table | partitions | type | possible_keys | key  | key_len | ref  | rows | Extra       |

+------+-------------+-------+------------+------+---------------+------+---------+------+------+-------------+

|    1 | SIMPLE      | t1    | p1         | ALL  | NULL          | NULL | NULL    | NULL |    2 | Using where |

+------+-------------+-------+------------+------+---------------+------+---------+------+------+-------------+

1 row in set (0.00 sec)

drop table if exists t1;

create table t1 (i int, j int) partition by list columns(i,j) (partition p1 values in ((10,10)), partition p2 default);

insert into t1 values (10,1);

select * from t1 where i = 10;