SET FOREIGN_KEY_CHECKS = 0; 
SET @tables = NULL;
SELECT GROUP_CONCAT(table_schema, '.', table_name) INTO @tables
  FROM information_schema.tables 
  WHERE table_schema = 'galaxy';

SET @tables = CONCAT('DROP TABLE ', @tables);
SELECT @tables;

PREPARE stmt FROM @tables;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
SET FOREIGN_KEY_CHECKS = 1; 
