Mysql存储过程中游标的用法实例
作者：defias
这篇文章主要介绍了Mysql存储过程中游标的用法,以商户关联数据的插入及更新为例分析了MySQL存储过程中游标的使用技巧,需要的朋友可以参考下
本文实例讲述了Mysql存储过程中游标的用法。分享给大家供大家参考。具体如下：
1. 批量插入商户路由关联数据：
DELIMITER $$
USE `mmm_mac`$$
DROP PROCEDURE IF EXISTS `批量插入商户路由关联数据`$$
CREATE DEFINER=`root`@`%` PROCEDURE `批量插入商户路由关联数据`()
BEGIN
DECLARE v_partner_no VARCHAR(32);
DECLARE v_partner_id INT(11);
DECLARE v_sc_pid INT(11);
DECLARE v_mac_no VARCHAR(32);
DECLARE v_mac_addr VARCHAR(32);
DECLARE n_mac_no BIGINT;
DECLARE n_mac_addr BIGINT;
DECLARE n_mac_addr_str VARCHAR(32);
DECLARE done INT;
#取得商户数据
DECLARE cur_partnerlist CURSOR
FOR
SELECT comp_id, partner_no, sc_pid FROM mmm_partner.anl_partner;
SET n_mac_no = 100000000;
SET n_mac_addr = 1000000000;
OPEN cur_partnerlist;
REPEAT
FETCH cur_partnerlist INTO v_partner_id,v_partner_no,v_sc_pid;
SET v_mac_no = CONCAT('MAC',v_sc_pid,n_mac_no);
SET n_mac_addr_str = CONCAT(SUBSTR(n_mac_addr,1,2),':',SUBSTR(n_mac_addr,3,2),':',SUBSTR(n_mac_addr,5,2),':',SUBSTR(n_mac_addr,7,2),':',SUBSTR(n_mac_addr,9,2));
SET v_mac_addr = CONCAT('CC:',n_mac_addr_str);
SET n_mac_no = n_mac_no + 1;
SET n_mac_addr = n_mac_addr + 1;
#向t_machine_sc_config表中插入商户关联路由的数据
#insert into t_machine_sc_config(mac_no, partner_no, partner_id, sc_pid, mac_addr, comp_id, is_lock) values('MAC2016000000001','44060430603381',1,4403,'C8:87:18:AB:79:66',1,1);
INSERT INTO t_machine_sc_config(mac_no, partner_no, partner_id, sc_pid, mac_addr, comp_id, is_lock) VALUES(v_mac_no,v_partner_no,v_partner_id,v_sc_pid,v_mac_addr,1,1);
UNTIL 0 END REPEAT;
CLOSE cur_partnerlist;
END$$
DELIMITER ;
2. 更新商户表：
DELIMITER $$
USE `mmm_partner`$$
DROP PROCEDURE IF EXISTS `更新商户表`$$
CREATE DEFINER=`root`@`%` PROCEDURE `更新商户表`()
BEGIN
DECLARE v_partner_no VARCHAR(32);
DECLARE vpartner_no VARCHAR(32);
DECLARE v_partner_id VARCHAR(32);
DECLARE n BIGINT;
DECLARE partnerid_list CURSOR
FOR
SELECT comp_id FROM 100msh_partner.anl_partner WHERE TRIM(partner_no) = '';
SET vpartner_no = '2015415parno';
SET n = 10000000;
OPEN partnerid_list;
REPEAT
FETCH partnerid_list INTO v_partner_id;
SET v_partner_no = CONCAT(vpartner_no,n);
SET n = n + 1;
UPDATE mmm_partner.anl_partner SET partner_no = v_partner_no WHERE comp_id = v_partner_id;
UNTIL 0 END REPEAT;
CLOSE partnerid_list;
END$$
DELIMITER ;
希望本文所述对大家的mysql数据库程序设计有所帮助。