The BIT field values are not displayed in MySQL.
It's because BIT values are characters that cannot be printed…
To see them, add UNSIGNED.
※ Specifying UNSIGNED allows only positive numbers to be stored.
mysql> desc test;
+---------+---------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------+---------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| name | text | YES | | NULL | |
| enabled | bit(1) | YES | | NULL | |
+---------+---------+------+-----+---------+----------------+
3 rows in set (0.00 sec)
mysql> insert into test (name,enabled) VALUES('AAA',b'1');
Query OK, 1 row affected (0.01 sec)
mysql> insert into test (name,enabled) VALUES('BBB',b'0');
Query OK, 1 row affected (0.00 sec)
mysql> select * from test;
+----+------+---------+
| id | name | enabled |
+----+------+---------+
| 1 | AAA | |
| 2 | BBB | |
+----+------+---------+
2 rows in set (0.00 sec)
mysql> select id,name, cast(enabled as UNSIGNED) as enabled from test; +----+------+---------+ | id | name | enabled | +----+------+---------+ | 1 | AAA | 1 | | 2 | BBB | 0 | +----+------+---------+ 2 rows in set (0.01 sec)