Mysql創(chuàng)建測試大量測試數(shù)據(jù)
修改mysql配置
max_heap_table_size=4000M
innodb_flush_log_at_trx_commit=0
創(chuàng)建測試數(shù)據(jù)庫
create database helloJiu charset=utf8;
use helloJiu;
創(chuàng)建數(shù)據(jù)表
CREATE TABLE `test_innodb` (
`id` INT (11) NOT NULL AUTO_INCREMENT,
`user_id` VARCHAR (20) NOT NULL,
`group_id` INT (11) NOT NULL,
`create_time` datetime NOT NULL,
PRIMARY KEY (`id`),
KEY `index_user_id` (`user_id`) USING HASH
) ENGINE = INNODB AUTO_INCREMENT = 1 DEFAULT CHARSET = utf8;
創(chuàng)建隨機字符串函數(shù)
delimiter $$
CREATE FUNCTION rand_string(n int) RETURNS varchar(255)
begin
declare chars_str varchar(100)
default "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
declare return_str varchar(255) default "";
declare i int default 0;
while i < n do
set return_str=concat(return_str,substring(chars_str,floor(1+rand()*62),1));
set i= i+1;
end while;
return return_str;
end $$
delimiter ;
創(chuàng)建存儲過程
delimiter $$
CREATE PROCEDURE `insert_data`(IN n int)
BEGIN
DECLARE i INT DEFAULT 1;
WHILE (i <= n ) DO
INSERT into test_innodb (user_id,group_id,create_time ) VALUEs (rand_string(20),FLOOR(RAND() * 100) ,now() );
set i=i+1;
END WHILE;
END $$
delimiter ;
調用存儲過程, 插入數(shù)據(jù)
call insert_data(1000000);
插入成功后, 可以快速創(chuàng)建其他數(shù)據(jù)表并插入大量數(shù)據(jù)
create table test_myisam engine=myisam as select * from test_innodb;
