mysql批量数据脚本
文章转自该处https://www.cnblogs.com/Onlywjy/archive/2017/08/13/7354865.html
步骤如下
1. 建表
2. 设置log_bin_trust_function_creators
3. 创建函数
4. 创建存储过程
5. 调用存储过程
mysql批量数据脚本
-
1 建表
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; 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 "",/*姓名*/ 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;
-
2 设置参数
show variables like 'log_bin_trust_function_creators'; set global log_bin_trust_function_creators=1;
-
3 创建函数
a.随机产生字符串 delimiter $$ create function rand_string(n int) returns varchar(255) begin declare chars_str varchar(100) default 'qwertyuiopasdfghjklzxcvbnm'; declare return_str varchar(255) default ''; declare i int default 0; while i<n do set return_str=concat(return_str,substring(chars_str,floor(1+rand()*52),1)); set i=i+1; end while; return return_str; end $$ b.随机产生部门编号 delimiter $$ create function rand_num() returns int(5) begin declare i int default 0; set i=floor(100+rand()*10); return i; end $$
-
4 创建存储过程
a.创建往emp表中插入数据的存储过程 delimiter $$ create procedure insert_emp(in start int(10),in max_num int(10)) begin declare i int default 0; /*把autocommit设置成0*/ set autocommit= 0; repeat set i=i+1; insert into emp(empno,ename,job,mgr,hiredate,sal,comm,deptno) values((start+i),rand_string(6),'SALESMAN',0001,curdate(),2000,400,rand_num()); until i=max_num end repeat; commit; end $$ b.创建往dept表中插入数据的存储过程 delimiter $$ create procedure insert_dept(in start int(10),in max_num int(10)) begin declare i int default 0; set autocommit=0; repeat set i=i+1; insert into dept(deptno,dname,loc) values((start+i),rand_string(10),rand_string(8)); until i=max_num end repeat; commit; end $$
-
5 调用存储过程
call insert_dept(100,10);//从deptno为100起插入10条随机生成数据 call insert_emp(100001,5000000);//从empno为100001起插入5000000条随机生成数据
我自己根据这个写了如下的插入脚本
建的表如下:
create table test_source
(
id varchar(20) primary key,
source_name varchar(50),
source_type varchar(50),
create_time datetime default current_timestamp,
update_time datetime default null on update current_timestamp
);
delimiter $$/*设置结束符*/
create function rand_string(n int) returns varchar(255)/*创建函数指定返回变量*/
begin
declare chars varchar(100) default 'qwertyuiopasdfghjklzxcvbnm';
declare return_str varchar(255) default '';
declare i int default 0;/*声明了三个变量*/
while i<n do/*循环语句产生随机的字符串*/
set return_str=concat(return_str,substring(chars,floor(1+rand()*26),1));
set i=i+1;
end while;
return return_str;
end $$
delimiter $$
create procedure insert_test_source(in start int (10),in max_num int(10))/*创建过程*/
begin
declare i int default 0;
set autocommit=0;/*设置手动提交*/
repeat/*重复执行插入语句*/
set i=i+1;
insert into test_source(id,source_name,source_type) values(start+i,rand_string(5),rand_string(5));
until i=max_num end repeat;/*结束repeat*/
commit;
end $$
delimiter ;/*设置结束符为;*/
call insert_test_source(1,500);/*调用*/