mysql怎么循环添加 mysql中的循环语句
利用mysql存储过程循环插入新数据并更新
DROP PROCEDURE IF EXISTS excute_job_v340;
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create procedure excute_job_v340()
begin
declare rdevid int; //声明参数
declare rech_id int;
declare slot int;
declare new_rech_id int;
declare new_price DOUBLE;//声明参数
declare done INT DEFAULT FALSE;////声明结束标识参数
-- 声明游标
DECLARE rdevrech_id CURSOR FOR
select r.id as rdevid,r.rechargeconfig_id as rech_id,r.slot_no as slot from b_device_tbl dev
LEFT JOIN r_device_rechargeconfig_tbl r on dev.id= r.device_id
where dev.dev_typedef_id =7 and dev.masterid is not NULL and r.rechargeconfig_type=4 and r.is_deleted=0 and r.slot_no is not NULL;
-- 将结束标志绑定到游标
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
-- 打开游标
OPEN rdevrech_id;
-- 遍历
read_loop: LOOP
-- 取值
FETCH NEXT from rdevrech_id INTO rdevid,rech_id,slot;
IF done THEN
LEAVE read_loop;
END IF;// 结束判断
select price into new_price from c_device_rechargeconfig_item_tbl where rechargeconfig_id =rech_id limit 1;
INSERT INTO `c_device_rechargeconfig_tbl` ( `type`, `style_id`, `is_default`, `dev_type_code`, `is_deleted`, `create_time`, `slot_no`)
VALUES ( '4', NULL, '0', '0', '0', '2019-08-19 15:59:24',slot );
select max(id) into new_rech_id from c_device_rechargeconfig_tbl ;
INSERT INTO `c_device_rechargeconfig_item_tbl` ( `price`, `goods`, `description`, `is_deleted`, `create_time`, `rechargeconfig_id` )
VALUES ( new_price,new_price, '0.00', '0', '2019-08-19 15:59:24', new_rech_id);
update r_device_rechargeconfig_tbl set rechargeconfig_id=new_rech_id where id=rdevid;
END LOOP;
CLOSE rdevrech_id;
end;
call excute_job_v340() ;//调用执行
mysql 循环插入增量数据
CREATE DEFINER= XXXXXX @ % PROCEDURE PRO_taxpayer_invoice_statistical ()
BEGIN
DECLARE v_unifiedcredit_code VARCHAR(64);
DECLARE v_max_date datetime;
SELECT MAX(sii.created_on) INTO v_max_date
FROM sj_taxpayer_invoice_statistical_info sii;
SELECT 1;
END
mysql 怎么循环插入多条数据
一条insert语句批量插入多条记录
常见的insert语句,向数据库中,一条语句只能插入一条数据:
insert into persons
(id_p, lastname , firstName, city )
values(204,'haha' , 'deng' , 'shenzhen');
(如上,仅插入了一条记录)
怎样一次insert插入多条记录呢?
示例:
insert into persons
(id_p, lastname , firstName, city )
values
(200,'haha' , 'deng' , 'shenzhen'),
(201,'haha2' , 'deng' , 'GD'),
(202,'haha3' , 'deng' , 'Beijing');
这样就批量插入数据了, 遵循这样的语法,就可以批量插入数据了。
执行成功
mysql循环添加数据
已经测试,创建并运行下面的存储过程可以循环添加数据:
create procedure dowhile()
begin
declare i int default 0;
start transaction;
while i50 do
insert into users(userId,userName,userPwd) values(null,concat('s00',i),123456);
set i=i+1;
end while;
commit;
end;
delimiter;
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