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December 19, 2015 23:28
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MySQL で、あるスキーマの文字コードを一括で変換するプロシージャ。
(MySQL でありがちな、初期設定のままテーブルを作った後で laten 文字コード になっていたことに気づいた時の対処法を探っていたらこうなった。テストはしていない。)
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DELIMITER $$ | |
CREATE PROCEDURE sps_change_collate(schema_name varchar) | |
BEGIN | |
/*--------------------------------------------------------- | |
[DECLARATION] | |
---------------------------------------------------------*/ | |
DECLARE c CURSOR FOR | |
SELECT table_name | |
FROM information_schema.tables | |
WHERE table_type = 'BASE TABLE' | |
AND table_schema = schema_name; | |
DECLARE not_found int DEFAULT FALSE; | |
DECLARE CONTINUE HANDLER FOR NOT FOUND SET not_found = TRUE; | |
DECLARE table_name varchar; | |
DECLARE query varchar; | |
/*--------------------------------------------------------- | |
[EXECUTE] | |
----------------------------------------------------------*/ | |
SET query = CONCAT( | |
'ALTER DATABASE ', | |
schema_name, | |
' CHARACTER SET utf8'); | |
-- | |
OPEN c; | |
read_loop: LOOP | |
FETCH c INTO table_name; | |
IF not_found THEN | |
LEAVE read_loop; | |
END IF; | |
-- change table's default code | |
SET query = CONCAT( | |
'ALTER TABLE `', | |
table_name, | |
'` CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci'); | |
EXECUTE query; | |
-- change code of all letter type columns | |
SET query = CONCAT( | |
'ALTER TABLE `', | |
table_name, | |
'` CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci'); | |
EXECUTE query; | |
END LOOP; | |
CLOSE c; | |
END | |
$$ |
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