Question

I wish to store the result of a SELECT statment into multiple variables.

I know that the result of this query will always return 6 ints from 6 different rows.

I have tried using the following code :

SELECT id INTO @photo1, @photo2, @photo3, @photo4, @photo5, @photo6 
FROM album WHERE uploaded = @time AND scene_id = NEW.id;

album is a table.
uploaded is a field in album.
scene_id is a field in album.
id is the PRIMARY_KEY of album.

I have read that the number of variables must equal the number of fields. Which is obviously not the case in the above statement.

With this in mind, how would I overcome this problem?

This code is being used within a MySQL Trigger.

EDIT : Relevant Table schema as per request :

person   -- name of table   
id | approved -- id is PK

album   -- name of table
id | uploaded | scene_id  -- id is PK

Trigger is fired on change of approved from 0 to 1

Answer 1

You can join with the same table and ensure that each join will provide a new id, something like (eg. for two ids, but you will get the point):

SELECT a1.id, a2.id INTO @photo1, @photo2
FROM album a1 
inner join album a2 on a2.scene=a1.scene and a2.upload=a1.upload and a2.id>a1.id 
WHERE a1.uploaded = @time AND a1.scene_id = NEW.id;

See SqlFiddle for a complete sql and test case.