How to describe the single field in table by using mysql?

mysql> desc codingslover;
+----------+-------------+------+-----+---------+-------+
| Field    | Type        | Null | Key | Default | Extra |
+----------+-------------+------+-----+---------+-------+
| ProjId   | varchar(20) | NO   | PRI | NULL    |       |
| BranchId | int(11)     | YES  |     | NULL    |       |
| AddedOn  | datetime    | YES  |     | NULL    |       |
| Status   | int(11)     | YES  |     | NULL    |       |
+----------+-------------+------+-----+---------+-------+
4 rows in set (0.00 sec)

mysql> desc codingslover ProjId;
+---------+-------------+------+-----+---------+-------+
| Field   | Type        | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| ProjId  | varchar(20) | NO   | PRI | NULL    |       |
+---------+-------------+------+-----+---------+-------+
1 row in set (0.00 sec)

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