mysql automatically generates a large amount of data
In order to learn and verify high-performance mysql, a large amount of data is automatically generated for testing. The content comes from the Internet.
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Create random number generation
DELIMITER $$ CREATE DEFINER=`root`@`%` FUNCTION `random_num`( ) RETURNS int(5) BEGIN DECLARE i INT DEFAULT 0; SET i = FLOOR(100+RAND()*10); RETURN i; END$$ DELIMITER ;
Generate random string
DELIMITER $$ CREATE DEFINER=`root`@`%` FUNCTION `random_string`(n INT) RETURNS varchar(255) CHARSET latin1 BEGIN DECLARE chars_str VARCHAR(100) DEFAULT 'abcdefghijklmnopqrstuvwxyzABCDEFJHIJKLMNOPQRSTUVWXYZ'; DECLARE return_str VARCHAR(255) DEFAULT ''; DECLARE i INT DEFAULT 0; WHILE i < n DO SET return_str =CONCAT(return_str,SUBSTRING(chars_str,FLOOR(1+RAND()*52),1)); SET i = i + 1; END WHILE; RETURN return_str; END$$ DELIMITER ;
Generate random number , returns a varchar type data combination, such as mobile phone number
DELIMITER $$ CREATE DEFINER=`root`@`%` FUNCTION `random_string_phone`(n INT) RETURNS varchar(255) CHARSET latin1 BEGIN DECLARE chars_str VARCHAR(100) DEFAULT '1234567890'; DECLARE return_str VARCHAR(255) DEFAULT ''; DECLARE i INT DEFAULT 0; WHILE i < n DO SET return_str =CONCAT(return_str,SUBSTRING(chars_str,FLOOR(1+RAND()*10),1)); SET i = i + 1; END WHILE; RETURN return_str; END$$ DELIMITER ;
Create user table myisam engine
CREATE TABLE `sys_user_myisam` ( `user_id` bigint(100) NOT NULL AUTO_INCREMENT, `username` varchar(100) DEFAULT NULL COMMENT '用户名', `password` varchar(100) DEFAULT NULL COMMENT '密码', `salt` varchar(100) DEFAULT NULL COMMENT '盐', `email` varchar(100) DEFAULT NULL COMMENT '邮箱', `mobile` varchar(100) DEFAULT NULL COMMENT '手机号', `status` int(1) DEFAULT '1' COMMENT '状态 0：禁用 1：正常', PRIMARY KEY (`user_id`) ) ENGINE=MyISAM AUTO_INCREMENT=1000001 DEFAULT CHARSET=utf8 COMMENT='系统用户MyISAM';
Create stored procedure to generate data
DELIMITER $$ CREATE DEFINER=`root`@`%` PROCEDURE `insert_sys_user_myisam`(IN START INT(10),IN max_num INT(10)) BEGIN DECLARE i INT DEFAULT 0; SET autocommit = 0; REPEAT SET i = i + 1; INSERT INTO sys_user_myisam (user_id,username,password,salt,email,mobile,status) VALUES (START+i,random_string(10),random_string(6),random_string(10),random_string(20),random_string_phone(12),1); UNTIL i = max_num END REPEAT; COMMIT; END$$ DELIMITER ;
Create table innodb engine
create table sys_user_innodb ENGINE=MyISAM AUTO_INCREMENT=1000001 DEFAULT CHARSET=utf8 as select * from sys_user_myisam;
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