Résultats de sélection du concaténate MySQL
SELECT person_id, GROUP_CONCAT(hobbies SEPARATOR ', ')
FROM peoples_hobbies
GROUP BY person_id;
Drakonkat
SELECT person_id, GROUP_CONCAT(hobbies SEPARATOR ', ')
FROM peoples_hobbies
GROUP BY person_id;
mysql -B -N --user=user --password=secret -e "SELECT distinct CONCAT( 'alter table ', TABLE_SCHEMA, '.', TABLE_NAME, ' CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;' ) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = 'DBname';" > alter.sqlSELECT distinct CONCAT( 'alter table ', TABLE_SCHEMA, '.', TABLE_NAME, ' CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;' ) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = 'DBname';mysql --user=user --password=secret < alter.sqlalter table DBname.DBfield CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;