mysql利用存储过程实现批量处理数据的简单 *** 作

-- 判断存储test是否存在，如果存在谈谨则删除

DROP PROCEDURE IF EXISTS test

-- 创建存储过程

CREATE PROCEDURE test()

BEGIN

-- 声明循环变量int型 i

DECLARE i INT DEFAULT 1

-- 设置i=0

set i=0

-- 循环100次

while i<100 do

-- if判断i为偶数

if i%2 = 0 THEN

-- 要实现的 *** 作  CONCAT(str1,str2,...) concat函数用于拼接子串和数字类型

INSERT into user(name,addr) VALUES(CONCAT('test',i,'ss'),'addr')

end if

-- i自洞拦增含颤基

set i=i+1

END WHILE

END

-- 调用存储过程

CALL test()

DROP PROCEDURE IF EXISTS excute_job_v340

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

                告裤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

             猛并   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`,        袜知简                 `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

用存储过程衫或搜，写或历个循团旦环给你个我以前写的看看

begin

declare i int

declare b int

declare c int

set @i=2

set @b=6

set @c=0

set @stmt = concat('insert into t_j_goods_name (id,`code`,`name`)

values(?,?,(select distinct `a` from sheet1 limit ?, 1))')

while @i<442 do

prepare s1 from @stmt

execute s1 using @b,@i,@c

deallocate prepare s1

set @i=@i+1,@b=@b+1,@c=@c+1

end while

end

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