Mysql批量插入数据

#新建库
create database bigdata;
use bigdata;
#新建部门表
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;
#新建员工表
create table emp(
id int unsigned primary key auto_increment,
empno mediumint unsigned not null default 0 comment '编号',
ename varchar(20) not null default '' comment '名字',
job varchar(9) not null default '' comment '工作',
mgr mediumint unsigned not null default 0 comment '上级编号',
hiredate date not null comment '入职时间',
sal decimal(7,2) not null comment '薪水',
comm decimal(7,2) not null comment '红利',
deptno mediumint unsigned not null default 0 comment '部门编号'
)engine=innodb default charset=gbk;
#由于开启过慢查询日志,开启bin-log需要指定一个参数
show variables like 'log_bin_trust_function_creators';
set global log_bin_trust_function_creators=1;
#创建函数,产生随机字符串
delimiter $$
create function rand_string(n int) returns varchar(255)
begin
declare chars_str varchar(100) default 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
declare return_str varchar(255) default '';
declare i int default 0;
while i<n do
set return_str=concat(return_str,substring(chars_str,floor(1+rand()*52),1));
set i=i+1;
end while;
return return_str;
end $$
#删除 drop function rand_string;
#创建函数,产生随机部门编号
delimiter $$
create function rand_num() returns int(5)
begin
declare i int default 0;
set i=floor(100+rand()*10);
return i;
end $$
#删除 drop function rand_num;
#创建存储过程,往部门表插入数据
delimiter $$
create procedure insert_emp(in start_num int(10),in max_num int(10))
begin
declare i int default 0;
#set autocommit=0 把autocommit设置成0
set autocommit=0;
repeat
set i=i+1;
insert into emp(empno,ename,job,mgr,hiredate,sal,comm,deptno) values((start_num+i),rand_string(6),'SALESMAN',0001,curdate(),2000,400,rand_num());
until i=max_num
end repeat;
commit;
end $$
#创建存储过程,往员工表插入数据
delimiter $$
create procedure insert_dept(in start_num int(10),in max_num int(10))
begin
declare i int default 0;
#set autocommit=0 把autocommit设置成0
set autocommit=0;
repeat
set i=i+1;
insert into dept(deptno,dname,loc) values((start_num+i),rand_string(10),rand_string(8));
until i=max_num
end repeat;
commit;
end $$
#调用存储过程,批量生成数据.员工表会用到部门表deptno,所以先生成部门表的数据
delimiter ;
call insert_dept(100,10); #从100开始,生成10条
select *from dept;
#调用存储过程,生成员工表数据
call insert_emp(100000,10000000); #从100000开始,生成一千万条 (建议分10次,一次插入一百万)
select *from emp;