原帖地址：http://mysqlpreacher.com/wordpress/2009/07/mysql-processlist-showkill-processes/
使用方法：
call process_list(’show’,‘username’,‘hostname’);
– shows all processes owned by username@hostname
call process_list(‘kill’,‘username’,‘hostname’);
– kills all processes owned by username@hostname
具體定義：
###########################################
##
## Stored Procedure: process_list & kill user
## call process_list(’show’,'%’) show processlist for all users
## call process_list(’show’,'root’) show processlist for root user
## call process_list(’kill’,'user1′) kill connections for user1
##
## by Darren Cassar http://www.mysqlpreacher.com
##
###########################################
DROP PROCEDURE IF EXISTS process_list;
DELIMITER $$
CREATE PROCEDURE process_list(choice char(4), user_name_in varchar(16), host_name_in varchar(60))
BEGIN
DECLARE cur_conn int;
IF choice <> 'show' AND choice <> 'kill' then
SELECT "wrong choice";
END IF;
IF user_name_in = '' then
SET user_name_in = '%';
END IF;
IF host_name_in = '' then
SET host_name_in = '%';
END IF;
SET cur_conn = (SELECT connection_id());
IF choice = 'show' then
SELECT *
FROM `information_schema`.`processlist`
WHERE ID <> cur_conn
AND USER LIKE user_name_in
AND (HOST LIKE CONCAT(host_name_in ,':%') OR HOST LIKE host_name_in);
ELSEIF choice = 'kill' then
IF user_name_in = 'root' then
SELECT "Illegal username when killing processes";
ELSE
SET @CNT = (
SELECT count(*)
FROM `information_schema`.`processlist`
WHERE ID <> cur_conn
AND USER LIKE user_name_in
AND (HOST LIKE CONCAT(host_name_in ,':%') OR HOST LIKE host_name_in));
SET @VAR=1;
WHILE (@VAR <= @CNT) DO
SET @TID = (
SELECT id
FROM `information_schema`.`processlist`
WHERE ID <> cur_conn
AND USER LIKE user_name_in
AND (HOST LIKE CONCAT(host_name_in ,':%') OR HOST LIKE host_name_in) LIMIT 1);
SET @k = CONCAT('kill ' , @TID);
PREPARE killcom FROM @k;
EXECUTE killcom;
SET @k = NULL;
SET @VAR = @VAR+1;
END WHILE;
END IF;
END IF;
END$$
DELIMITER;