问题描述
因此,如果我在MySQL 5.5中执行此查询:
SELECT mycol FROM mytable WHERE mycol LIKE '%Â'
我获得了mycol以A的任何变体结尾的所有记录,所以我得到了
LA
la
LÂ
如何修改此查询,以便仅获得以特定特殊字符结尾的结果
show create table mytable
CREATE TABLE `direcciones` (
`idusuario` varchar(50) NOT NULL,`iddireccion` int(10) NOT NULL AUTO_INCREMENT,`calle` varchar(150) NOT NULL,**-- THIS IS MY FIELD**
`numero` int(4) NOT NULL,`piso` varchar(10) NOT NULL,`puerta` varchar(10) NOT NULL,`localidad` varchar(100) NOT NULL,`provincia` varchar(100) NOT NULL,`cp` int(5) NOT NULL,PRIMARY KEY (`iddireccion`)
) ENGINE=InnoDB AUTO_INCREMENT=4192 DEFAULT CHARSET=latin1
show variables like '%character_set%'
character_set_client utf8
character_set_connection utf8
character_set_database utf8
character_set_filesystem binary
character_set_results utf8
character_set_server latin1
character_set_system utf8
character_sets_dir /usr/share/mysql/charsets/
解决方法
要防止mysql使用列的排序规则设置(允许这些匹配),请指定您的字符串为二进制:
SELECT mycol FROM mytable WHERE mycol LIKE BINARY '%Â';
或
SELECT mycol FROM mytable WHERE mycol LIKE CAST('%Â' AS BINARY);