摘要： mysql 字段中int后面所跟数字有何意义？ varchar后的数字又有何意义？mysql> create table t(a int(1));Query OK, 0 rows affected (0.10 sec)mysql> insert into t values(123);Query OK, 1 row affected (0.02 sec)mysql> insert into t values(12345678);Query OK, 1 row affected (0.03 sec)mysql> select * from t;+----------+| a 阅读全文