无论主机参数如何,我都想从我的 MySQL 数据库中删除具有指定名称的所有用户。这是我写的:
DELIMITER ;;
## CREATING SCHEMA
DROP SCHEMA IF EXISTS rms;;
CREATE SCHEMA rms;;
USE rms;;
## DROP USER
DROP PROCEDURE IF EXISTS PREPARE_USERS;;
CREATE PROCEDURE PREPARE_USERS()
BEGIN
DECLARE V_RECORD_NOT_FOUND INTEGER DEFAULT 0;
DECLARE V_USER_HOST CHAR(60);
DECLARE C_HOSTS_CURSOR CURSOR FOR
SELECT host FROM mysql.user WHERE user='rms';
DECLARE CONTINUE HANDLER FOR NOT FOUND SET V_RECORD_NOT_FOUND = 0;
OPEN C_HOSTS_CURSOR;
READ_LOOP: LOOP
FETCH C_HOSTS_CURSOR INTO V_USER_HOST;
IF V_RECORD_NOT_FOUND != 0 THEN
LEAVE READ_LOOP;
END IF;
SET @V_EXEC=CONCAT(CONCAT('DROP USER \'rms\'@\'',V_USER_HOST),'\';;');
PREPARE V_STMT FROM @V_EXEC;
EXECUTE V_STMT;
DEALLOCATE PREPARE V_STMT;
END LOOP;
CLOSE C_HOSTS_CURSOR;
FLUSH PRIVILEGES;
CREATE USER 'rms'@'127.0.0.1' IDENTIFIED BY 'rms123';
GRANT ALL ON rms.* TO 'rms'@'127.0.0.1'
WITH MAX_USER_CONNECTIONS 250;
END;;
CALL PREPARE_USERS();;
DROP PROCEDURE IF EXISTS PREPARE_USERS;;
DELIMITER ;
但它给了我错误,我不知道为什么:/当没有用户名为“rms”时,它甚至不会运行,但如果有的话,MySQL 声称它们不能被删除,即使他们是。