DELIMITER $$

CREATE  PROCEDURE `sp_insert_test_users`(IN `para_count` INT)

BEGIN

    DECLARE p_username varchar(50);

    DECLARE p_countryCallingCode varchar(10) default '';

    DECLARE p_phone varchar(20);

    DECLARE p_all_phone varchar(20);

    DECLARE p_create_time datetime;

    DECLARE p_index int default 0;

    DECLARE p_userid int default 0;

IF para_count > 0 THEN

    SET p_create_time = NOW();

    while p_index < para_count do    

        select concat(

              substring('ABCDEFGHIJKLMNOPQRSTUVWXYZ', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1),

              substring('abcdefghijklmnopqrstuvwxyz', rand()*26 , 1)

             ) into p_username;

        select concat(

              '',

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1),

              substring('', rand()* 10 , 1)

             ) into p_phone;

        if not exists ( select 1 from users where username = p_username or phone = p_phone )

        and length(p_username) = 8 and length(p_phone) = 11

        then 

            set p_all_phone = concat(p_countryCallingCode,';',p_phone);

            INSERT INTO `users`

            (`username`, `countryCallingCode`, `phone`, `_phone`,

            `group`,  `created_at`, `updated_at`)

            VALUES

            (p_username,p_countryCallingCode,p_phone,p_all_phone,

            'user', p_create_time, p_create_time);

             select @@IDENTITY into p_userid;

            INSERT INTO `users_test_mock`

            (`userid`,`username`, `countryCallingCode`, `phone`)

            VALUES

            (p_userid,p_username,p_countryCallingCode,p_phone);

            SET p_index = p_index + 1;

        end if;

    end while;

END IF;

END$$

DELIMITER ;