选择带有日语字符的MySQL行 [英] Select MySQL rows with Japanese characters

问题描述

有人会知道一种可靠的方法(使用mySQL或其他方法)来选择数据库中包含日语字符的行吗?我的数据库中有很多行，其中一些仅包含字母数字字符，其中一些具有日语字符.

Would anyone know of a reliable method (with mySQL or otherwise) to select rows in a database that contain Japanese characters? I have a lot of rows in my database, some of which only have alphanumeric characters, some of which have Japanese characters.

推荐答案

想要对字符集有问题的规则:

Rules when you want to have problem with character sets:

1. 在创建数据库时使用utf8编码:

1. when creating database use utf8 encoding:

CREATE DATABASE  _test DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

确保所有文本文件(varchar和text)都使用UTF-8:

Make sure all text fileds (varchar and text) are use UTF-8:

CREATE TABLE _test.test (
  id INT NOT NULL AUTO_INCREMENT,
  name VARCHAR(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE = MyISAM;

建立连接时，请在查询/更新数据库之前执行以下操作:

When you make a connection do this before you query/update the database:

SET NAMES utf8;

使用phpMyAdmin-登录时选择UTF-8.

With phpMyAdmin - Choose UTF-8 when you login.

将网页编码设置为utf-8，以确保所有发布/获取数据都采用UTF-8(否则您将不得不痛苦地进行转换.). PHP代码(php文件中的第一行或至少在任何输出之前):

set web page encoding to utf-8 to make sure all post/get data will be in UTF-8 (or you'll have to converting is painful..). PHP code (first line in the php file or at least before any output):

header('Content-Type: text/html; charset=UTF-8');

确保所有查询均以UTF8编码编写.如果使用PHP:

Make sure all your queries are written in UTF8 encoding. If using PHP:

6.1.如果PHP支持UTF-8中的代码-只需使用UTF-8编写文件即可.

6.1. If PHP supports code in UTF-8 - just write your files in UTF-8.

6.2.如果php是在没有UTF-8支持的情况下编译的，则将字符串转换为UTF-8，如下所示:

6.2. If php is compiled without UTF-8 support - convert your strings to UTF-8 like this:

$str = mb_convert_encoding($str, 'UTF-8', '<put your file encoding here');
$query = 'SELECT * FROM test WHERE name = "' . $str . '"';

应该这样做.

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