e ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云","男","444989898784562304","淘宝公司",54588.85124);
ERROR 1062 (23000): Duplicate entry '444989898784562304' for key 'ID_C'之后我又增加1条正确的记录，结果发现该新记录的"ID"值是25，最后一条 跟 倒数第二条 的"ID"值刚好是11-1=10
mysql> insert into person_list (name,sex,ID_C,vocation,salary) value ("马云的儿子","男","444989898784562305","淘宝公司",54588.85124);
Query OK, 1 row affected (0.04 sec)
mysql> select * from person_list;
+----+-----------------+------+--------------------+--------------+---------+
| id | name | sex | ID_C | vocation | salary |
+----+-----------------+------+--------------------+--------------+---------+
| 1 | 诸葛亮 | 男 | 360428199908230544 | 蜀国 | 8654.56 |
| 2 | 关羽 | 男 | 360428198908230544 | 蜀国 | 86.236 |
| 3 | 貂蝉 | 女 | 361428198908231479 | 美女集团 | 4566.02 |
| 4 | 西施 | 女 | 795410365478901234 | 美女集团 | 124.1 |
| 5 | 雷军 | 男 | 469787036544025984 | 小米公司 | 1784.1 |
| 6 | 乔布斯 | 男 | 456982103749651024 | 苹果公司 | 88888.9 |
| 7 | 李白 | 中 | 147852036978410210 | NULL | 0 |
| 10 | 乔布儿 | 男 | 456902103749651024 | 苹果公司 | 88888.9 |
| 13 | 乔布儿 | 男 | 056902103749651024 | 苹果公司 | 88888.9 |
| 14 | 马云 | 男 | 444989898784562304 | 淘宝公司 | 54588.9 |
| 25 | 马云的儿子 | 男 | 444989898784562305 | 淘宝公司 | 54588.9 |
+----+-----------------+------+--------------------+--------------+---------+
11 rows in set (0.00 sec)
mysql> 所以我估摸着，在插入记录 语句错误的时候 自动增长类型的值会依旧增加，不是只有正确的时候才会+1。
|