Fill database tables with a large amount of test data

Question

I need to load a table with a large amount of test data. This is to be used for testing performance and scaling.

How can I easily create 100,000 rows of random/junk

Answer 1

For multiple row cloning (data duplication) you could use

DELIMITER $$
CREATE PROCEDURE insert_test_data()
BEGIN
  DECLARE i INT DEFAULT 1;

  WHILE i < 100000 DO
    INSERT INTO `table` (`user_id`, `page_id`, `name`, `description`, `created`)
    SELECT `user_id`, `page_id`, `name`, `description`, `created`
    FROM `table`
    WHERE id = 1;
    SET i = i + 1;
  END WHILE;
END$$
DELIMITER ;
CALL insert_test_data();
DROP PROCEDURE insert_test_data;