Explain mysql statement

by 
# mysql -u root -p 

MariaDB [(none)]> wp_database -e "EXPLAIN SELECT * FROM posts"

 EXPLAIN SELECT * FROM 2qGr3sjm_posts;
+------+-------------+----------------+------+---------------+------+---------+------+------+-------+
| id   | select_type | table          | type | possible_keys | key  | key_len | ref  | rows | Extra |
+------+-------------+----------------+------+---------------+------+---------+------+------+-------+
|    1 | SIMPLE      |          posts | ALL  | NULL          | NULL | NULL    | NULL | 2519 |       |
+------+-------------+----------------+------+---------------+------+---------+------+------+-------+

Or from command line

#  mysql -u root -p wp_database -e "EXPLAIN SELECT * FROM posts"

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