Mysql大量插入随机数据方法--存储过程
时间:2021-07-01 10:21:17
帮助过:2人阅读
> create table bigdata (id
int,name
char(
2));
创建存储过程:
mysql> delimiter
//
mysql> create procedure rand_data(
in num
int)
-> begin
-> declare str char(
62)
default ‘abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789‘;
--总共62个字符。
-> declare str2
char(
2);
-> declare i
int default 0;
-> while i
<num do
-> set str2
=concat(
substring(
str,
1+floor(
rand()
*61),
1),
substring(
str,
1+floor(
rand()
*61),
1));
-> set i
=i
+1;
-> insert into bigdata
values (
floor(
rand()
*num),str2);
-> end while;
-> end;
-> //
Query OK, 0 rows affected (
0.01 sec)
mysql> delimiter ;
插入一百万条数据:
mysql> call rand_data(1000000);
Query OK, 1 row affected (1 hour 11 min 34.95 sec)
mysql> select * from bigdata limit 300,10;
+--------+------+
| id | name |
+--------+------+
| 230085 | WR |
| 184410 | 7n |
| 540545 | nN |
| 264578 | Tf |
| 571507 | at |
| 577023 | 0M |
| 731172 | 7h |
| 914168 | ph |
| 391848 | h6 |
| 665301 | dj |
+--------+------+
10 rows in set (0.00 sec)
插入数据成功。
Mysql大量插入随机数据方法--存储过程
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