desc テーブル情報表示
mysql> desc sandbox.test1;
+-------+------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+------+------+-----+---------+-------+
| t | text | YES | | NULL | |
| b | blob | YES | | NULL | |
+-------+------+------+-----+---------+-------+
2 rows in set (0.02 sec)
mysql>