[英]Insert row's column data modified in another column of the same row
我有一個帶有“ wp_posts”表的“ leedle”數據庫,該表具有以下列結構:
id | content | post_title | post_name
列“ post_name”用於網址。 “ post_title”列包含俄語文本。
我需要從“ post_title”中獲取信息並將其插入“ post_name”中。 紅寶石中執行此操作的代碼如下:
require 'mysql'
con = Mysql.new('localhost', 'root', 'pass', 'leedle')
con.query('set names utf8')
con.query("UPDATE wp_posts SET post_name = post_title")
con.close
不僅如此,我還需要將“ post_title”中的俄文本插入音譯為“ post_name”中的音譯,然后將“привет”變成“ privet”。 我怎樣才能做到這一點 ?
我找到了一個mysql函數來翻譯英語的俄語文本:
DELIMITER $$
CREATE FUNCTION `cool_url` (original VARCHAR(512)) RETURNS VARCHAR(512)
BEGIN
DECLARE translit VARCHAR(512) DEFAULT '';
DECLARE len INT(3) DEFAULT 0;
DECLARE pos INT(3) DEFAULT 1;
DECLARE letter CHAR(2);
SET original = TRIM(LOWER(original));
SET len = CHAR_LENGTH(original);
WHILE (pos <= len) DO
SET letter = SUBSTRING(original, pos, 1);
CASE TRUE
WHEN letter = 'а' THEN SET letter = 'a';
WHEN letter = 'б' THEN SET letter = 'b';
WHEN letter = 'в' THEN SET letter = 'v';
WHEN letter = 'г' THEN SET letter = 'g';
WHEN letter = 'д' THEN SET letter = 'd';
WHEN letter = 'е' THEN SET letter = 'e';
WHEN letter = 'ё' THEN SET letter = 'e';
WHEN letter = 'ж' THEN SET letter = 'z';
WHEN letter = 'з' THEN SET letter = 'z';
WHEN letter = 'и' THEN SET letter = 'i';
WHEN letter = 'й' THEN SET letter = 'i';
WHEN letter = 'к' THEN SET letter = 'k';
WHEN letter = 'л' THEN SET letter = 'l';
WHEN letter = 'м' THEN SET letter = 'm';
WHEN letter = 'н' THEN SET letter = 'n';
WHEN letter = 'о' THEN SET letter = 'o';
WHEN letter = 'п' THEN SET letter = 'p';
WHEN letter = 'р' THEN SET letter = 'r';
WHEN letter = 'с' THEN SET letter = 's';
WHEN letter = 'т' THEN SET letter = 't';
WHEN letter = 'у' THEN SET letter = 'u';
WHEN letter = 'ф' THEN SET letter = 'f';
WHEN letter = 'х' THEN SET letter = 'ch';
WHEN letter = 'ц' THEN SET letter = 'c';
WHEN letter = 'ч' THEN SET letter = 'c';
WHEN letter = 'ш' THEN SET letter = 's';
WHEN letter = 'щ' THEN SET letter = 's';
WHEN letter = 'ъ' THEN SET letter = '';
WHEN letter = 'ы' THEN SET letter = 'y';
WHEN letter = 'ь' THEN SET letter = 'i';
WHEN letter = 'э' THEN SET letter = 'e';
WHEN letter = 'ю' THEN SET letter = 'ju';
WHEN letter = 'я' THEN SET letter = 'ja';
WHEN letter IN ('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0')
THEN SET letter = letter;
ELSE
SET letter = '-';
END CASE;
SET translit = CONCAT(translit, letter);
SET pos = pos + 1;
END WHILE;
WHILE (translit REGEXP '\-{2,}') DO
SET translit = REPLACE(translit, '--', '-');
END WHILE;
RETURN TRIM(BOTH '-' FROM translit);
END
DELIMITER ; $$
但是當我在mysql中運行它時會返回:
mysql> UPDATE wp_posts SET post_name = cool_url(post_title);
ERROR 1267 (HY000): Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='
我可以建議用紅寶石進行音譯。 為此,您需要加載俄語音譯規則:
/config/transliterations.yml
)。 看看我的要點 require 'active_support/inflector'
使用此代碼:
I18n.load_path = Dir['config/*.yml'] I18n.backend.load_translations I18n.transliterate 'привет'
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