批量插入（函数+存储过程）
create table dept(
id INT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
deptno MEDIUMINT UNSIGNED NOT NULL DEFAULT 0,
dname VARCHAR(20) NOT NULL DEFAULT "",
loc VARCHAR(13) NOT NULL DEFAULT ""
)engine=innodb default charset=GBK;
create table emp(
id INT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
empno MEDIUMINT UNSIGNED NOT NULL DEFAULT 0,/*编号*/
ename VARCHAR(20) NOT NULL DEFAULT "",/*名字*/
job VARCHAR(9) NOT NULL DEFAULT "",/*工作*/
mgr MEDIUMINT UNSIGNED NOT NULL DEFAULT 0,/*上级编号*/
hiredate DATE NOT NULL,/*入职时间*/
sal DECIMAL(7,2) NOT NULL,/*薪水*/
comm DECIMAL(7,2) NOT NULL,/*红利*/
deptno MEDIUMINT UNSIGNED NOT NULL DEFAULT 0 /*部门编号*/
)engine=innodb default charset=GBK;
##随机产生字符串
DELIMITER $$
CREATE FUNCTION rand_string(n INT) RETURNS VARCHAR(255)
BEGIN
DECLARE chars_str VARCHAR(100) DEFAULT "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
DECLARE return_str VARCHAR(255) DEFAULT "";
DECLARE i int DEFAULT 0;
WHILE i<n DO
SET return_str=CONCAT(return_str,SUBSTRING(chars_str,FLOOR(1+RAND()*52),1));
SET i=i+1;
END WHILE;
RETURN return_str;
END $$
##随机产生部门编号
DELIMITER $$
CREATE FUNCTION rand_num()
RETURNS INT(5)
BEGIN
DECLARE i INT DEFAULT 0;
SET i =FLOOR(100+RAND()*10);
RETURN i;
END $$
#如果要删除
drop function rand_num;
#创建往emp表中插入数据的存储过程" title="存储过程">存储过程
DELIMITER $$
CREATE PROCEDURE insert_emp(IN START INT(10),IN max_num INT(10))
BEGIN
DECLARE i INT DEFAULT 0;
SET autocommit=0;
REPEAT
SET i=i+1;
INSERT INTO emp (empno,ename,job,mgr,hiredate,sal,comm,deptno) VALUES((START+i),rand_string
(6),"SALESMAN",0001,CURDATE(),2000,400,RAND_NUM());
UNTIL i=max_num
END REPEAT;
COMMIT;
END $$
#创建往dept表中插入数据的存储过程
DELIMITER $$
CREATE PROCEDURE insert_dept(IN START INT(10),IN max_num INT(10))
BEGIN
DECLARE i INT DEFAULT 0;
SET autocommit=0;
REPEAT
SET i=i+1;
INSERT INTO dept (deptno,dname,loc) VALUES((START+i),rand_string(10),rand_string(8));
UNTIL i=max_num
END REPEAT;
COMMIT;
END $$
DELIMITER ;
CALL insert_dept(100,10);
CALL insert_emp(1000001,50000);
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