Updating multiple rows with different values

Question

I got this table in my MySQL database, \'users\'. It has the fields \'id\' and \'value\'.

Now, I want to update lots of rows in this table with a single

Answer 1

Assuming id is unique or primary...

insert into users 
  (id,value) 
VALUES 
  (1,53),(2,65),(3,47),(4,53),(5,47)
on duplicate key update
value=VALUES(value)

Answer 2

Rather than doing case variable when value then ..., try doing case when condition then ... - like so:

UPDATE users
    SET value = CASE 
        WHEN id in (1,4) THEN 53
        WHEN id = 2 THEN 65
        WHEN id in (3,5) THEN 47
    END
WHERE id IN (1,2,3,4,5)

Answer 3

I would just do this with a few different UPDATE statements.

UPDATE users
    SET value = 53
WHERE id = 1;


UPDATE users
    SET value = 65
WHERE id = 2;

...

This seems simplest if you only have 5 or 6 values to set on multiple rows each. Or is there some specific reason that you need to do this in one query?