MySQL中CHAR和NCHAR有什么区别?
CHAR和NCHAR都是固定长度的字符串数据类型。它们具有以下差异-
mysql>create table hello1(name CHAR(20)); Query OK, 0 rows affected (0.15
mysql>create table hello(name NCHAR(20)); Query OK, 0 rows affected (0.61
CHAR和NCHAR都是固定长度的字符串数据类型。它们具有以下差异-
mysql>create table hello1(name CHAR(20)); Query OK, 0 rows affected (0.15
mysql>create table hello(name NCHAR(20)); Query OK, 0 rows affected (0.61