1
我需要一个MySQL的函数剪裁字符串(包括换行和制表符)的开头和末尾的所有空格,所以我创建了以下功能:如何使这个MySQL函数不会搞乱我的字符集?
DROP FUNCTION IF EXISTS WSTrim;
DELIMITER $$
CREATE FUNCTION `WSTrim`(text LONGTEXT CHARSET utf8) RETURNS LONGTEXT CHARSET utf8
NO SQL
DETERMINISTIC
BEGIN
RETURN TRIM(REPLACE(REPLACE(REPLACE(text, '\t', ' '), '\r', ' '), '\n', ' '));
END$$
DELIMITER ;
尽管它在参数声明,并在规范说的返回值,这个函数弄乱了我的字符集,我想成为utf8
。如果我调用这个函数像这样:
INSERT INTO mytable (name) VALUES (WSTrim(' ČĆŽŠĐ čćžšđ '));
我得到一个警告
1 row(s) affected, 1 warning(s): 1366 Incorrect string value: '\xC4\x8C\xC4\x86\xC5\xBD...' for column 'name' at row 1
如何更改我的功能不会弄乱我的角色?
编辑1:
我使用的连接字符串
Server=myserver;Port=myport;Database=mydb;Uid=myuid;Pwd=mypwd;CharSet=utf8
而且,完整性,
mysql> show variables where Variable_name like 'character%' or Variable_name like 'collation%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
| collation_connection | utf8_general_ci |
| collation_database | utf8_unicode_ci |
| collation_server | utf8_unicode_ci |
+--------------------------+----------------------------+
注意,同样的事情发生,即使我连接使用MySQL Workbench,而不仅仅是我的应用程序。
编辑2:
INSERT INTO mytable (name) VALUES (' ČĆŽŠĐ čćžšđ ');
这正确地插入值。
编辑3:
mysql> SELECT WSTrim(' ČĆŽŠĐ čćžšđ ');
+-----------------------------------+
| WSTrim(' ČĆŽŠĐ čćžšđ ') |
+-----------------------------------+
| ??ŽŠ? ??žš? |
+-----------------------------------+
1 row in set, 1 warning (0.01 sec)
不要紧,我如何发送查询。但是,如果我在
show function status;
返回的行的一类我注意到的是:
+------+--------+----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
| Db | Name | Type | Definer | Modified | Created | Security_type | Comment | character_set_client | collation_connection | Database Collation |
+------+--------+----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
| mydb | WSTrim | FUNCTION | [email protected] | 2015-11-23 04:01:06 | 2015-11-23 04:01:06 | DEFINER | | latin1 | latin1_swedish_ci | latin1_swedish_ci |
+------+--------+----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+
出于某种原因,它把功能与latin1
。但是,我该如何改变这一点?
编辑4:
mysql> show create database mydb;
+----------+---------------------------------------------------------------------------------------+
| Database | Create Database |
+----------+---------------------------------------------------------------------------------------+
| mydb | CREATE DATABASE `mydb` /*!40100 DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci */ |
+----------+---------------------------------------------------------------------------------------+
1 row in set (0.01 sec)
在我的系统上,您的功能正常工作。你的问题可能是由于连接字符串 - 检查设置。 http://makandracards.com/makandra/2529-show-and-change-mysql-default-character-set – PaulF
@PaulF,我编辑了答案。 –
你是否检查过该函数返回的内容:SELECT WSTrim('ČĆŽŠĐčćžšđ'); – PaulF