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MySQL 快速创造百万测试数据

原创 作者:haoge0205 时间:2017-08-28 17:02:19 3 删除 编辑
CREATE TABLE `vote_record_memory` (  
    `id` INT (11) NOT NULL AUTO_INCREMENT,  
    `user_id` VARCHAR (20) NOT NULL,  
    `vote_id` INT (11) NOT NULL,  
    `group_id` INT (11) NOT NULL,  
    `create_time` datetime NOT NULL,  
    PRIMARY KEY (`id`),  
    KEY `index_id` (`user_id`) USING HASH  
) ENGINE = memory AUTO_INCREMENT = 1 DEFAULT CHARSET = utf8 ;




CREATE TABLE `vote_record` (  
    `id` INT (11) NOT NULL AUTO_INCREMENT,  
    `user_id` VARCHAR (20) NOT NULL,  
    `vote_id` INT (11) 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  ;


DELIMITER //
CREATE FUNCTION `rand_string`(n INT) RETURNS varchar(255) CHARSET latin1  
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 //
CREATE  PROCEDURE `add_vote_memory`(IN n int)  
BEGIN    
  DECLARE i INT DEFAULT 1;  
    WHILE (i <= n ) DO  
      INSERT into vote_record_memory  (user_id,vote_id,group_id,create_time ) VALUEs (rand_string(20),FLOOR(RAND() * 1000),FLOOR(RAND() * 100) ,now() );  
            set i=i+1;  
    END WHILE;  
END  //






CALL add_vote_memory(1000000) //


delimiter end ;


delimiter ;




INSERT into vote_record SELECT * from  vote_record_memory;






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