MySQL - 3 updates need to be run 1 by 1 in Procedure - mysql

Question

I have to run 3 updates in one procedure. My 3 separates update work well when I call them one bye one in php but I would like to have them regroup to perform only one call. My procedure is
create
definer = root#localhost procedure UpdateScorePredictionParticipant(IN predPts int(10), IN predId int(10), IN partId int(10))
BEGIN
UPDATE predictions
SET pred_pts = #predPts
WHERE pred_game_id = #predId and participant_id = #partId;
UPDATE ranking
SET pts_wildcard = (SELECT sum(pred_pts)
FROM predictions
INNER JOIN games g on predictions.pred_game_id = g.id
WHERE predictions.participant_id = #partId)
WHERE participant_id = #partId;
UPDATE ranking
SET total = (pts_wildcard+pts_conference+pts_division+pts_pred_sb+pts_sb)
WHERE participant_id = #partId;
END;
How could I perform those 3 updates 1 by 1 but in the same call.
Thanks,

Answer 1

As you are updating 3 different tables, you will need to do three separate updates. However if you put them in a procedure, you only need call the procedure from the PHP code.
To fix the procedure code, remove the # from the used parameter names.
It is also a good practice to prefix the parameters, so they will not mix up with the column names.
Last thing you can do, is to use a transaction inside the procedure, so all updates complete or if some of them fail, none of them gets done. This ensures the atomicity in the operation.
create procedure UpdateScorePredictionParticipant(
in_predPts int,
in_predId int,
in_partId int
)
BEGIN
START TRANSACTION;
UPDATE predictions
SET pred_pts = in_predPts
WHERE pred_game_id = in_predId and participant_id = in_partId;
UPDATE ranking
SET pts_wildcard = (
SELECT sum(pred_pts)
FROM predictions
INNER JOIN games g on predictions.pred_game_id = g.id
WHERE predictions.participant_id = in_partId
)
WHERE participant_id = in_partId;
UPDATE ranking
SET total = (pts_wildcard+pts_conference+pts_division+pts_pred_sb+pts_sb)
WHERE participant_id = in_partId;
COMMIT;
END