+----+--------+------+------------+------+
| id | member | book | dueDate | fine |
+----+--------+------+------------+------+
| 1 | jim | NULL | NULL | NULL |
| 2 | tom | NULL | 2008-11-14 | NULL |
| 3 | tom | NULL | 2008-11-28 | NULL |
| 4 | jim01 | bk02 | 2008-11-28 | NULL |
+----+--------+------+------------+------+
如图:column_name 和column_type具体指的是什么呢?
| id | member | book | dueDate | fine |
+----+--------+------+------------+------+
| 1 | jim | NULL | NULL | NULL |
| 2 | tom | NULL | 2008-11-14 | NULL |
| 3 | tom | NULL | 2008-11-28 | NULL |
| 4 | jim01 | bk02 | 2008-11-28 | NULL |
+----+--------+------+------------+------+
如图:column_name 和column_type具体指的是什么呢?
column_type int