Calling stored procedure sequentially from .sql file

Question

I\'m stuck here.

I\'ve got a Procedure that I want to run X* times in a row. (*X is couple of thousands times)
The procedure based on input data does this:
1. Lo

Answer 1

This isn't really a solution, but a workaround.

Just to clarify, summary tables had id column as PRIMARY KEY with AUTO_INCREMENT option and indexes on both user_id and action_id column.

My investigation showed that although my procedure was looking for an entry that existed using WHERE user_id = u_id AND action_id = a_id in certain situations it didn't find it causing new row being inserted with the same user_id and action_id values - something I did not want.

Debugging the procedure showed that the summary row I was looking for, although not accessible with WHERE user_id = u_id AND action_id = a_id condition, was properly returned when calling it's id - PRIMARY KEY.
With this find I decided to change format of id column, from UNASIGNED INT with AUTO_INCEREMENT to a CHAR(32) which consisted of:

<user_id>|<action_id>

This meant that I knew exactly what the id of the row I wanted is even before it existed. This solved the problem really. It also enabled me to use INSERT ... ON DUPLICATE KEY UPDATE ... construct.

Below my updated procedure:

CREATE PROCEDURE `NEW_ACTION`(
  IN a_date TIMESTAMP,
  IN u_name VARCHAR(255),
  IN a_name VARCHAR(255),
  IN a_chars INT,
  IN url VARCHAR(255),
  IN ip VARCHAR(15))
  SQL SECURITY INVOKER

lbl_proc: BEGIN
    DECLARE a_id, u_id, a_day, a_month, error INT;
    DECLARE us_id, usd_id, usm_id CHAR(48);
    DECLARE sep CHAR(1);
    DECLARE CONTINUE HANDLER FOR SQLSTATE '23000' SET error = 1;

    SET sep = '|';
    SET error = 0;
    SET a_day = DATE_FORMAT(SUBSTRING(a_date ,1,10), '%Y%m%d');
    SET a_month = SUBSTRING(a_day, 1, 6);

    /* RETREIVING action.id */
    SET a_id = (SELECT `id` FROM `game_actions` WHERE `name` = a_name);
    IF a_id IS NULL THEN
      SELECT 'error';
      LEAVE lbl_proc;
    END IF;

    /* RETREIVING users.id */
    SET u_id = (SELECT `id` FROM `game_users` WHERE `name` = u_name);
    IF u_id IS NULL THEN
      INSERT INTO `game_users` (name) VALUES (u_name);
      SET u_id = LAST_INSERT_ID();
    END IF;

    /* SETTING summaries ids */
    SET us_id = CONCAT(u_id, sep, a_id);
    SET usd_id = CONCAT(a_day, sep, u_id, sep, a_id);
    SET usm_id = CONCAT(a_month, sep, u_id, sep, a_id);

    /* SAVING action AND UPDATING summaries */
    SET autocommit = 0;
    START TRANSACTION;
      INSERT INTO `game_users_actions` (`date`, `user_id`, `action_id`, `chars`, `url`, `ip`)
        VALUES (a_date, u_id, a_id, a_chars, url, ip);
      INSERT INTO `game_users_summaries` (`id`, `user_id`, `action_id`, `qty`, `chars`)
        VALUES (us_id, u_id, a_id, 1, a_chars)
        ON DUPLICATE KEY UPDATE qty = qty + 1, chars = chars + a_chars;
      INSERT INTO `game_users_summaries_days` (`id`, `day`, `user_id`, `action_id`, `qty`, `chars`)
        VALUES (usd_id, a_day, u_id, a_id, 1, a_chars)
        ON DUPLICATE KEY UPDATE qty = qty + 1, chars = chars + a_chars;
      INSERT INTO `game_users_summaries_months` (`id`, `month`, `user_id`, `action_id`, `qty`, `chars`)
        VALUES (usm_id, a_month, u_id, a_id, 1, a_chars)
        ON DUPLICATE KEY UPDATE qty = qty + 1, chars = chars + a_chars;   

      IF error = 1 THEN
        SELECT 'error';
        ROLLBACK;
        LEAVE lbl_proc;
      ELSE
        SELECT 'success';
        COMMIT;
      END IF;
  END

Anyway, I still think there's some kind of a bug in MySQL, but I consider problem solved.