oracle 字符长度函数及实例教程

oracle 字符长度函数及实例教程
-- Oracle 里面使用 lengthb
SQL> select lengthb('123456') from dual;

LENGTHB('123456')
-----------------
6

SQL> select lengthb('123456天津') from dual;

LENGTHB('123456天津')
---------------------

> select char_length('123456');
+-----------------------+
| char_length('123456') |
+-----------------------+
| 6 |
+-----------------------+
1 row in set (0.00 sec)

mysql> select char_length('123456天津');
+---------------------------+
| char_length('123456天津') |
+---------------------------+
| 10 |
+---------------------------+
1 row in set (0.00 sec)

mysql>

实例三

SQL> select lengthb('123456') from dual;

LENGTHB('123456')
-----------------
6

SQL> select lengthb('123456天津') from dual;

LENGTHB('123456天津')
---------------------
10

SQL>