Internationalization of sql query - mysql

Question

I have the following SQL tables:
-- Create syntax for TABLE 'companies'
CREATE TABLE `companies` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL DEFAULT '',
`country` varchar(255) NOT NULL DEFAULT '',
`city` varchar(255) NOT NULL DEFAULT '',
`address` text NOT NULL,
`logo` varchar(255) NOT NULL DEFAULT 'empty',
`size` int(11) NOT NULL DEFAULT '32',
PRIMARY KEY (`id`),
KEY `city` (`city`),
KEY `country` (`country`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=latin1;
-- Create syntax for TABLE 'i18n'
CREATE TABLE `i18n` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`lang` varchar(2) DEFAULT NULL,
`word` text,
`english` text,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
-- Create syntax for TABLE 'tags'
CREATE TABLE `tags` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`name` text,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1;
-- Create syntax for TABLE 'tagsForCompany'
CREATE TABLE `tagsForCompany` (
`company` int(11) DEFAULT NULL,
`tid` int(11) unsigned NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
I have the following sql query (thanks to #Rockse):
SELECT c.*
FROM
(SELECT *
FROM companies
WHERE city = "<Some City>" AND country = "<Some Country>") AS c
INNER JOIN tagsForCompany AS tc ON c.id = tc.Company
INNER JOIN tags AS t ON t.id = tc.TID
WHERE t.Name REGEXP '<a keyword>'
I need to be able to search for Companies with a keyword written in another language by searching in the i18n table for a translation. So that searching for restaurant will give the same results as searching for レストラン (restaurant in Japanese) or ristorante (restaurant in italian).
Honestly I have no idea what to edit in the query, my SQL knowledge is a bit limited.

Answer 1

The solution was easier than I thought:
If someone would improve, I would be more than happy
SELECT c.*
FROM i18n, (SELECT *
FROM companies
WHERE city = "<some city>" AND country = "<some country>") AS c
INNER JOIN tagsForCompany AS tc ON c.id = tc.Company
INNER JOIN tags AS t ON t.id = tc.TID
WHERE t.Name = i18n.`english` AND i18n.word REGEXP "<some word>" OR t.Name REGEXP "<the same word as before>"
But for doing that I had to change all the tables to utf-8