MariaDB [test]> analyze insert into t1 values (1),(2);
Query OK, 2 rows affected (0.07 sec)
Records: 2  Duplicates: 0  Warnings: 0

MariaDB [test]> explain insert into t1 values (1),(2);
+------+-------------+-------+------+---------------+------+---------+------+------+-------+
| id   | select_type | table | type | possible_keys | key  | key_len | ref  | rows | Extra |
+------+-------------+-------+------+---------------+------+---------+------+------+-------+
|    1 | INSERT      | t1    | ALL  | NULL          | NULL | NULL    | NULL | NULL | NULL  |
+------+-------------+-------+------+---------------+------+---------+------+------+-------+
1 row in set (0.00 sec)

MariaDB [test]> analyze replace into t1 values (1),(2);
Query OK, 2 rows affected (0.05 sec)
Records: 2  Duplicates: 0  Warnings: 0

MariaDB [test]> explain replace into t1 values (1),(2);
+------+-------------+-------+------+---------------+------+---------+------+------+-------+
| id   | select_type | table | type | possible_keys | key  | key_len | ref  | rows | Extra |
+------+-------------+-------+------+---------------+------+---------+------+------+-------+
|    1 | INSERT      | t1    | ALL  | NULL          | NULL | NULL    | NULL | NULL | NULL  |
+------+-------------+-------+------+---------------+------+---------+------+------+-------+
1 row in set (0.00 sec)