mysql循环插入数据

实验中经常会遇到需要多条数据的情况就想到了用SQL语句循环生成数据

DROP PROCEDURE if EXISTS test_insert;
DELIMITER ;;
CREATE PROCEDURE test_insert()
BEGIN
DECLARE y BIGINT DEFAULT 1;
WHILE y<100000
DO
INSERT INTO `sshshop`.`product` (`pname`, `market_price`, `shop_price`, `image`, `pdesc`, `is_hot`, `pdate`, `csid`) VALUES ('Thinkpad', '5999', '5099', 'products/dn2.jpg', 'Thinkpad', '1', '2018-05-09 14:23:07', '26');
SET y=y+1;
END WHILE ;
commit;
END;;
CALL test_insert();

　　运行这个需要点时间：

当然可以在插入的时候在名字属性上该些变动：

DROP PROCEDURE if EXISTS test_insert;
DELIMITER ;;
CREATE PROCEDURE test_insert()
BEGIN
DECLARE y BIGINT DEFAULT 1;
DECLARE n VARCHAR(255);
DECLARE b VARCHAR(255);
WHILE y<50000
DO
SET b="师傅送";
SET n=CONCAT("美了美",y,b,y);
INSERT INTO `sshshop`.`product` (`pname`, `market_price`, `shop_price`, `image`, `pdesc`, `is_hot`, `pdate`, `csid`) VALUES (n, '5999', '5099', 'products/dn2.jpg', 'Thinkpad', '1', '2018-05-09 14:23:07', '26');
SET y=y+1;
END WHILE ;
commit;
END;;
CALL test_insert();

　　这样就保证插入的数据不重复更具有测试性

还有就是双重循环插入数据：

DELIMITER ;;
CREATE PROCEDURE test_insert()

BEGIN
DECLARE a INT DEFAULT 1;
DECLARE b TINYINT DEFAULT 1;
WHILE (a <= 100) DO
-- repeat 

SET a = a + 1;
-- select a;
WHILE (b <=20) DO
insert into school_sp_mj(school_id,mojor_id,status) values(a,b,1);
SET b = b + 1;
-- select b;
END WHILE; 

SET b = 1;
-- select a;
-- until a >= i_PlayerCount
-- end repeat;
END WHILE;
commit;
END;;
CALL test_insert();