...
mysql> describe marcHoldingsRecords;
+------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+----------------+
| catalogKey | int(11) | YES | | NULL | |
| m852c | varchar(10) | YES | | NULL | |
| m863c | mediumtext | YES | | NULL | |
| m863e | mediumtext | YES | | NULL | |
| m863x | mediumtext | YES | | NULL | |
| m863z | mediumtext | YES | | NULL | |
| m866a | mediumtext | YESm866 | | NULL | |
| m866xz | mediumtext | YES | | NULL | |
| m867a | mediumtext | YESm867 | | NULL | |
| m867xz | mediumtext | YES | | NULL | |
| m868a | mediumtext | YES | | NULL | |
| m868xzm868 | mediumtext | YES | | NULL | |
| id | int(11) | NO | PRI | NULL | auto_increment |
+------------+-------------+------+-----+---------+----------------+
...