> Ok, I thought that I will be misunderstood... > > I'll try to explain this in example below: > > I have table > > CREATE TABLE `product_descriptions` ( > `id_product_description` mediumint(8) unsigned NOT NULL auto_increment, > `id_product` mediumint(8) unsigned NOT NULL default '0', > `lang` varchar(2) default NULL, > `text_data` text, > PRIMARY KEY (`id_product_description`), > ) ENGINE=MyISAM DEFAULT CHARSET=utf8 > > > in column `text_data` i have all texts in all languages (pl, en, ru etc.) So the > problem > is that this column is meant to store every collation for this language but in UTF-8. > Now, when I get records from this table I should give database some info that I will > use > i.e. 'utf_8_polish_ci' collation on whole page - I don't need to change it on whole > page > (I use PHP by the way) > > This solution I use is very handy as when I need to add some language to my pages > then I > only add some info in application about what language this would be and... this > should > work. I can't change database structure on every language upgrade. Besides I would > have > for example 20 columns with different collations like: > > text_data_pl > text_data_ru > text_data_ro > text_data_en > text_data_... > > and this table is not the only one which stores information in different > languages... So > please consider this and please if you know tell me what collation_connection is for. > > -- > "Use the force - read the source" > Piotr Duszynski mailto:[EMAIL PROTECTED]
Ok, now I think I understand better... from mysql manual: "collation_connection is important for comparisons of literal strings. For comparisons of strings with column values, it does not matter because columns have a higher collation precedence." http://dev.mysql.com/doc/mysql/en/Charset-connection.html If I understand this correctly this means that the _only_ time collation_connection is used is for an SQL statement like this: SELECT col1 FROM table1 WHERE "stringliteral1" = "stringliteral2"; This isn't a very useful SQL query but it is legal and the only way to know how to compare the two string literals is to have a variable called collation_connection. When you are comparing, for example, a string literal to a column the collation of the column has a higher precedence than the collation_connection variable which is used for the string. Therefore the _only_ way to compare a string against a column without using the column's default collation is to explicitly specify which collation to use in the comparison with a COLLATE clause like this "COLLATE utf8_polish_ci". It might be a little more work but you'll probably have to dynamically add a COLLATE clause to all your queries based on the language you want. best regards, Jeremy -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
