mysql生成百万级数量测试数据（超简单）

-- ----------------------------
DROP TABLE IF EXISTS `user_test`;
CREATE TABLE `user_test` (
id BIGINT(20) UNSIGNED  NOT NULL AUTO_INCREMENT COMMENT ‘主键id‘,
`user_name`  VARCHAR(255) DEFAULT NULL  COMMENT ‘用户名‘,
`pass_word`  VARCHAR(255) DEFAULT NULL  COMMENT ‘密码‘,
PRIMARY KEY (id)
)
ENGINE=INNODB
AUTO_INCREMENT=1
COMMENT= ‘用户信息表‘
;

INSERT INTO user_test (user_name, pass_word) 
SELECT
    MD5(RAND()),
    RAND(10000) 
FROM
     user_test